Vision Test: Trivia Quiz On Oculomotor Nerve Function!

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  • 1/74 Questions

    Stereopsis is a binocular visual perception of three-dimensional space (physiological depth perception).

    • True
    • False
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About This Quiz

Vision Test: Trivia Quiz on Oculomotor Nerve Function! The oculomotor nerve is the third of 12 pairs of cranial nerves in the brain. This nerve is responsible for the eyeball and eyelid movement. In this test, you will get to learn more about it in preparation for any test you will be expected to take. Do give it a shot!

Vision Test: Trivia Quiz On Oculomotor Nerve Function! - Quiz

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  • 2. 

    Compensatory strategies, including scanning, using markers, using fingers as a guide, and slowing the pace of reading are all treatment strategies for visual inattention.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Compensatory strategies such as scanning, using markers, using fingers as a guide, and slowing the pace of reading are effective treatment strategies for visual inattention. These strategies help individuals with visual inattention to improve their focus and attention while reading. By implementing these strategies, individuals can compensate for their visual inattention and enhance their reading abilities. Therefore, the statement "Compensatory strategies, including scanning, using markers, using fingers as a guide, and slowing the pace of reading are all treatment strategies for visual inattention" is true.

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  • 3. 

    The functional implications of ocular alignment include ADL, community management, driving, and watching television.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    This statement is true because ocular alignment refers to the coordination of both eyes to focus on the same object, which is essential for various daily activities. Activities of daily living (ADL), such as reading and writing, require proper ocular alignment to ensure clear vision. Community management involves social interactions, and having aligned eyes helps in maintaining eye contact and interpreting facial expressions accurately. Driving requires good ocular alignment to judge distances and navigate safely. Watching television also requires proper alignment to fully enjoy the visual content. Therefore, ocular alignment has functional implications for ADL, community management, driving, and watching television.

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  • 4. 

    When testing ocular alignment with a Maddox rod, holding the rod so the lines are oriented horizontally and produce a vertical line on the card will represent horizontal alignment.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When testing ocular alignment with a Maddox rod, the rod is held in a way that the lines are oriented horizontally. This causes the light to be diffracted in such a way that it produces a vertical line on the card. Since the Maddox rod is used to assess horizontal alignment, the vertical line on the card indicates that the eyes are horizontally aligned. Therefore, the statement is true.

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  • 5. 

    The functional implications of visual inattention are ADL, safety, community mobility, reading, and socialization.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The functional implications of visual inattention include difficulties in activities of daily living (ADL), safety concerns, limitations in community mobility, challenges in reading, and reduced socialization. Visual inattention refers to the inability to fully perceive or attend to visual stimuli, which can significantly impact an individual's ability to perform various tasks and engage in social interactions. Therefore, the statement that the functional implications of visual inattention are ADL, safety, community mobility, reading, and socialization is true.

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  • 6. 

    The oculomotor nerve innervates all muscles except the superior oblique and lateral rectus.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The oculomotor nerve is responsible for innervating most of the muscles that control eye movement. It supplies the superior rectus, inferior rectus, medial rectus, and inferior oblique muscles, allowing for vertical and medial eye movements. However, it does not innervate the superior oblique muscle, which is instead innervated by the trochlear nerve, or the lateral rectus muscle, which is innervated by the abducens nerve. Therefore, the statement that the oculomotor nerve innervates all muscles except the superior oblique and lateral rectus is true.

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  • 7. 

    Slight to absolute loss of vision due to increased intraocular pressure is caused by

    • Glaucoma

    • Cataracts

    • Macular degeneration

    • Diabetic retinopathy

    Correct Answer
    A. Glaucoma
    Explanation
    Glaucoma is a condition characterized by increased intraocular pressure, which can lead to a gradual loss of vision. This increased pressure damages the optic nerve, resulting in a gradual loss of peripheral vision that can progress to complete blindness if left untreated. Cataracts, macular degeneration, and diabetic retinopathy can also cause vision loss, but they are not specifically associated with increased intraocular pressure like glaucoma. Therefore, glaucoma is the correct answer in this case.

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  • 8. 

    When using a penlight to test a patient's eyes, you should be aware of seizure precautions.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When using a penlight to test a patient's eyes, it is important to be aware of seizure precautions because bright lights can potentially trigger a seizure in individuals who are susceptible to them. Seizure precautions involve taking measures to minimize the risk of seizures, such as ensuring a safe environment, avoiding triggers, and being prepared to respond appropriately if a seizure occurs. Therefore, it is essential to be cautious and aware of seizure precautions when using a penlight to test a patient's eyes.

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  • 9. 

    The stereopsis test procedure consists of: Asking the patient to look at two larger circles and indicate which one is closer or stands out   Asking the patient how many small objects are seen inside the large circles, what they are, and if they are lined up. Also, ask how many circles are around the outside.   If the patient sees only 2 objects in the middle, as to which 2. If less than 4 small circles are seen outside, ask which one.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the correct answer "True" is that the stereopsis test procedure does involve asking the patient to look at two larger circles and indicate which one is closer or stands out. Additionally, the procedure includes asking the patient about the number and arrangement of small objects inside the large circles, as well as the number of circles around the outside. Therefore, all the statements in the question accurately describe the steps of the stereopsis test procedure.

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  • 10. 

    The ability to change the focus of the eye so that objects at different distances can be seen clearly is

    • Assimilation

    • Accommodation

    • Dual focus

    • 20/20 vision

    Correct Answer
    A. Accommodation
    Explanation
    Accommodation refers to the ability of the eye to adjust its focus in order to see objects at different distances clearly. This is achieved by changing the shape of the lens to either flatten or thicken it, allowing for proper refraction of light onto the retina. Assimilation refers to the process of incorporating new information into existing knowledge. Dual focus is not a term commonly used in relation to the eye's ability to focus. 20/20 vision refers to normal visual acuity, but it does not specifically address the ability to change focus.

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  • 11. 

    The central system consists of the anterior visual system and the posterior visual system.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that the central system indeed consists of two components, namely the anterior visual system and the posterior visual system. These systems are responsible for processing visual information and transmitting it to the brain for interpretation. The anterior visual system includes the cornea, lens, and retina, while the posterior visual system includes the optic nerve, optic chiasm, and visual cortex. Therefore, it is true that the central system comprises both the anterior and posterior visual systems.

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  • 12. 

    The ability of the eyes to process one visual image from both eyes is known as

    • Convergence

    • Accommodation

    • Binocular visual skills

    • Monocular vision

    Correct Answer
    A. Binocular visual skills
    Explanation
    Binocular visual skills refer to the ability of the eyes to work together and process one visual image from both eyes. This includes the coordination of eye movements, depth perception, and the merging of two slightly different images from each eye into a single, three-dimensional perception. Convergence and accommodation are specific aspects of binocular vision, while monocular vision refers to the ability to see with only one eye.

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  • 13. 

    The functional implications of visual acuity are (choose all that apply)

    • Reading

    • ADL

    • Environmental negotiation

    • Sleeping

    Correct Answer(s)
    A. Reading
    A. ADL
    A. Environmental negotiation
    Explanation
    Visual acuity refers to the ability to see details and distinguish objects clearly. Reading requires good visual acuity as it involves focusing on small letters and words. Activities of daily living (ADL) such as cooking, dressing, and grooming also rely on visual acuity to perform tasks accurately. Environmental negotiation refers to the ability to navigate and interact with the surroundings, which requires clear vision. However, sleeping does not involve visual acuity as it is a state of rest where the eyes are typically closed.

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  • 14. 

    The remedial approach utilizes repeated drills and exercises which are aimed at recovery of function.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The remedial approach is a method that focuses on improving or restoring a person's function or abilities through repetitive drills and exercises. This approach is aimed at helping individuals recover and regain their lost skills or functions. Therefore, the statement that the remedial approach utilizes repeated drills and exercises for the recovery of function is true.

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  • 15. 

    The eyes moving together toward the nose to see objects clearly and/or singly is

    • Fixation

    • Accommodation

    • Convergence

    • Extropia

    Correct Answer
    A. Convergence
    Explanation
    Convergence refers to the coordinated movement of both eyes inward towards the nose, allowing them to focus on objects that are close to the viewer. This movement ensures that the eyes are aligned properly and work together to provide clear and single vision. Fixation refers to the ability to maintain steady focus on a specific object, accommodation refers to the adjustment of the lens to focus on objects at different distances, and extropia refers to a condition where the eyes are misaligned and point outward.

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  • 16. 

    Partial or complete graying of the lens with a progressive, painless loss of vision is caused by

    • Glaucoma

    • Cataracts

    • Macular degeneration

    • Diabetic retinopathy

    Correct Answer
    A. Cataracts
    Explanation
    Cataracts cause a partial or complete graying of the lens, leading to a progressive and painless loss of vision. This condition occurs when the proteins in the lens of the eye clump together, causing cloudiness and opacity. As the cataract progresses, it can significantly impair vision and may require surgical intervention to remove the affected lens and replace it with an artificial one. Glaucoma, macular degeneration, and diabetic retinopathy are different conditions that can also cause vision loss, but they are not specifically associated with the graying of the lens seen in cataracts.

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  • 17. 

    To perform a pursuits test you need only a target and an eyepatch.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A pursuits test is a type of eye examination that assesses eye movement and coordination. During this test, a target is moved in different directions, and the person being tested is required to track the target with their eyes. An eyepatch is used to cover one eye, forcing the person to rely solely on the other eye for tracking the target. Therefore, the statement that you only need a target and an eyepatch to perform a pursuits test is true.

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  • 18. 

    When interpreting pursuits you should note

    • Visual attention span

    • Abnormal jerky eye movements

    • Eye color

    • A&B only.

    • A, B, and C

    Correct Answer
    A. A&B only.
    Explanation
    When interpreting pursuits, you should note the visual attention span and abnormal jerky eye movements. These two factors are important in understanding the individual's ability to track and follow objects with their eyes. Eye color, on the other hand, does not play a significant role in interpreting pursuits. Therefore, the correct answer is A&B only.

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  • 19. 

    Focal/Ambient integration allows

    • Reading & writing

    • Listening

    • Sports performance

    • All of the above

    • None of the above

    Correct Answer
    A. All of the above
    Explanation
    Focal/Ambient integration allows for the integration of both focused and background information, which is beneficial for various activities such as reading and writing, listening, and sports performance. This integration helps individuals to effectively process and utilize information from both focal and ambient sources, enhancing their performance and understanding in these activities. Therefore, the correct answer is "all of the above."

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  • 20. 

    This visual acuity test would be appropriate for individuals ages 6 years through adulthood

    • Visual analogue scale

    • Lea symbol test

    • Snellen chart

    • Contrast sensitivity

    Correct Answer
    A. Snellen chart
    Explanation
    The Snellen chart is a visual acuity test that measures a person's ability to see small details at a specific distance. It consists of rows of letters or symbols in varying sizes, and the person being tested is asked to read the smallest line they can see clearly. This test is commonly used in eye clinics and is suitable for individuals aged 6 years and above, making it an appropriate choice for the given age range mentioned in the question.

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  • 21. 

    The goal of visual skills training is to increase independence and safety so the client can 

    • Return to home environment

    • Return to work

    • Return to driving

    • Increase community participation

    Correct Answer(s)
    A. Return to home environment
    A. Return to work
    A. Return to driving
    A. Increase community participation
    Explanation
    The goal of visual skills training is to improve the client's visual abilities and enhance their overall independence and safety. This can be achieved by helping them regain the necessary skills to return to their home environment, resume work, and drive again. Additionally, visual skills training aims to increase the client's community participation, enabling them to engage in various activities and social interactions. By focusing on these goals, the client can regain their independence and safety in various aspects of their life.

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  • 22. 

    When performing the convergence test, you should begin the test by holding the target at a distance which causes the patient to see the target in double. 

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because when performing the convergence test, the target should be held at a distance that causes the patient to see the target as a single image, not double. The convergence test measures the ability of the eyes to turn inward or converge while focusing on a near object. If the target appears double, it indicates a problem with convergence.

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  • 23. 

    When interpreting convergence

    • Blur point should be within 4-6 inches

    • Break point should be within 2-4 inches

    • Recovery point should be within 6-10

    • All of the above

    • None of the above

    Correct Answer
    A. All of the above
    Explanation
    The given question is about interpreting convergence. The explanation for the correct answer, which is "all of the above," is that when interpreting convergence, the blur point should be within 4-6 inches, the break point should be within 2-4 inches, and the recovery point should be within 6-10 inches. In other words, all three points should fall within their respective ranges for convergence to be properly interpreted.

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  • 24. 

    Visual field testing should be performed for _________ planes.

    • Horizontal

    • Vertical

    • Diagonal

    • All of the above

    • A&B only

    Correct Answer
    A. All of the above
    Explanation
    Visual field testing should be performed for all of the above planes, which include horizontal, vertical, and diagonal planes. This is because visual field testing assesses the extent and quality of a person's peripheral vision in different directions. By testing all of these planes, healthcare professionals can accurately evaluate any potential visual field defects or abnormalities that may be present.

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  • 25. 

    When testing visual acuity, binocular vision should be tested before monocular vision

    • True

    • False

    Correct Answer
    A. False
    Explanation
    When testing visual acuity, it is important to test monocular vision before binocular vision. This is because monocular vision allows each eye to be tested individually, which can help identify any vision issues specific to each eye. Testing binocular vision, on the other hand, assesses how well both eyes work together. By testing monocular vision first, any potential problems with each eye can be identified before evaluating how well they function together. Therefore, the statement that binocular vision should be tested before monocular vision is false.

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  • 26. 

    Symmetrical alignment of the eyes at midline is known as

    • Binocular vision

    • Accommodation

    • Ocular alignment

    • Corneal reflex

    Correct Answer
    A. Ocular alignment
    Explanation
    Ocular alignment refers to the symmetrical alignment of the eyes at the midline. When the eyes are properly aligned, they are able to work together to provide binocular vision, which is the ability to perceive depth and have clear vision. Accommodation refers to the ability of the eyes to focus on near and far objects. Corneal reflex is a protective reflex that causes the eyes to blink in response to a stimulus. Therefore, the correct answer is ocular alignment.

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  • 27. 

    When interpreting near results of ocular alignment, a referral should be made if

    • 10 exophoria or greater

    • 5 esophoria or greater

    • Vertical imbalance of 2 diopeters or greater

    • All of the above

    • None of the above

    Correct Answer
    A. All of the above
    Explanation
    A referral should be made if any of the following conditions are present: 10 exophoria or greater, 5 esophoria or greater, or a vertical imbalance of 2 diopeters or greater. This means that if any one of these conditions is observed in the near results of ocular alignment, it is necessary to refer the patient for further evaluation or treatment.

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  • 28. 

    When testing visual fields, a penlight is necessary

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Testing visual fields does not require a penlight. Visual field testing is typically done using specialized equipment such as a perimeter or a tangent screen. These devices are used to measure the extent and sensitivity of a person's visual field. A penlight is not necessary for this type of testing.

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  • 29. 

    The anterior visual system controls

    • Eye

    • Optic nerve

    • Optic chiasm

    • All of the above

    • None of the above

    Correct Answer
    A. All of the above
    Explanation
    The anterior visual system controls the eye, optic nerve, and optic chiasm. The eye is responsible for receiving visual information, while the optic nerve carries this information from the eye to the brain. The optic chiasm is a crucial structure where the optic nerves from both eyes cross over, allowing for the integration of visual information from both sides of the visual field. Therefore, all of the options mentioned (eye, optic nerve, and optic chiasm) are controlled by the anterior visual system.

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  • 30. 

    When testing visual fields, the patient should be instructed to look at your nose at all times.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    During visual field testing, the patient is instructed to focus on a fixed point, usually the examiner's nose. This is done to ensure that the patient's gaze remains stable throughout the test, allowing for accurate assessment of their peripheral vision. By instructing the patient to look at the examiner's nose, any movements or shifts in gaze can be easily detected and accounted for during the test. Therefore, the statement "the patient should be instructed to look at your nose at all times" is true.

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  • 31. 

    Criteria for a referral after a stereopsis test include

    • 3-d effect seen immediately

    • Delay of more than 3 seconds

    • Head tilting, misalignment of center objects, omission of other objects

    • If any objects or circles are missing

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The correct answer is "All of the above". This means that all the criteria mentioned in the question are considered for a referral after a stereopsis test. These criteria include: the 3-d effect being seen immediately, a delay of more than 3 seconds, head tilting, misalignment of center objects, omission of other objects, and if any objects or circles are missing.

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  • 32. 

    Mary is a 65 year old woman with a history of hypertension and diabetes. She has recently experienced loss of her central vision and relies on her peripheral vision to see. Mary most likely suffers from

    • Glaucoma

    • Cataracts

    • Macular degeneration

    • Diabetic retinopathy

    Correct Answer
    A. Diabetic retinopathy
    Explanation
    Mary is a 65-year-old woman with a history of hypertension and diabetes. Her recent loss of central vision and reliance on peripheral vision suggest that she most likely suffers from diabetic retinopathy. This condition is a complication of diabetes that affects the blood vessels in the retina, leading to vision loss. Glaucoma, cataracts, and macular degeneration may also cause vision problems, but given Mary's medical history, diabetic retinopathy is the most likely explanation for her symptoms.

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  • 33. 

    _______ is the distance from the patient's nose where the eyes stop tracking, or when both eyes move laterally, or when the patient sees two targets.

    • Double vision

    • Blink reflex

    • Break point

    • Fixation

    • Recovery point

    Correct Answer
    A. Break point
    Explanation
    The break point refers to the distance from the patient's nose where the eyes stop tracking, or when both eyes move laterally, or when the patient sees two targets. This is the point at which the patient's eyes can no longer maintain focus or alignment, leading to a disruption in their ability to see clearly.

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  • 34. 

    Visual acuity is the last line where ______ or more of the letters were identified correctly

    • 40%

    • 75%

    • 50%

    • 80%

    • 100%

    Correct Answer
    A. 50%
    Explanation
    Visual acuity is a measure of the clarity or sharpness of vision. In this context, the statement suggests that the last line of the visual test chart is considered to have the correct visual acuity if at least 50% or more of the letters on that line are identified correctly. This means that the person being tested has a relatively good level of vision if they can correctly identify at least half of the letters on the last line of the chart.

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  • 35. 

    Occupational therapy approach that is favored when restoration is unlikely is 

    • Adaptive approach

    • Remedial approach

    • Biomechanical approach

    • Rehabilitation approach

    Correct Answer
    A. Adaptive approach
    Explanation
    The adaptive approach is favored when restoration is unlikely because it focuses on adapting and modifying the environment or task to enable individuals to function independently. This approach recognizes that some individuals may not fully regain their previous abilities and instead aims to optimize their current abilities. It involves the use of adaptive equipment, techniques, and strategies to enhance independence and participation in daily activities. The adaptive approach promotes a person-centered approach that focuses on individual strengths and abilities rather than trying to restore what may not be achievable.

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  • 36. 

    Macular degeneration is the leading cause of low vision among middle aged adults.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Macular degeneration is a common eye condition that primarily affects older adults, particularly those over the age of 50. It is the leading cause of vision loss in older adults, not middle-aged adults. Therefore, the statement that macular degeneration is the leading cause of low vision among middle-aged adults is false.

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  • 37. 

    The ability to focus centrally and continue to see peripherally in all directions is

    • Convergence

    • Fixation

    • Visual fields

    • Focus

    • Binocular vision

    Correct Answer
    A. Visual fields
    Explanation
    Visual fields refer to the range of vision that an individual can perceive without moving their eyes. It includes both central vision and peripheral vision. The ability to focus centrally and still be aware of objects in the periphery is an important aspect of visual fields. This allows individuals to have a broad awareness of their surroundings while maintaining focus on a specific object or task. Therefore, visual fields is the correct answer as it best describes the ability to focus centrally and continue to see peripherally in all directions.

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  • 38. 

    The ability to locate, fixate, and maintain eyes on targets in ll visual fields at both near and far distances is 

    • Accommodation

    • Visual fixation

    • Pursuits

    • Adaptive vision

    Correct Answer
    A. Visual fixation
    Explanation
    Visual fixation refers to the ability to locate, fixate, and maintain the eyes on targets in all visual fields at both near and far distances. It involves the coordination of eye movements to keep the gaze steady on a specific target. This ability is essential for clear and focused vision, as it allows the eyes to accurately track and follow objects of interest. Visual fixation is a fundamental aspect of visual perception and is necessary for activities such as reading, driving, and maintaining attention on a specific point in space.

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  • 39. 

    A lesion to what nerve will cause the eye to assume a down and out (exotropia) position?

    • Abducens (VI)

    • Oculomotor (III)

    • Trochlear (IV)

    Correct Answer
    A. Oculomotor (III)
    Explanation
    A lesion to the Oculomotor (III) nerve will cause the eye to assume a down and out (exotropia) position. The Oculomotor nerve controls the movement of the eye muscles, including the superior rectus, inferior rectus, and inferior oblique muscles. Damage to this nerve can result in weakness or paralysis of these muscles, leading to the eye deviating downward and outward.

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  • 40. 

    The function of this nerve is to turn the eye down and out

    • Oculomotor (III)

    • Trochlear (IV)

    • Abducens (VI)

    Correct Answer
    A. Trochlear (IV)
    Explanation
    The trochlear nerve (IV) is responsible for the function of turning the eye down and out. This nerve innervates the superior oblique muscle, which is responsible for these movements. The oculomotor nerve (III) controls most of the other eye movements, while the abducens nerve (VI) controls abduction of the eye (moving it laterally). Therefore, the trochlear nerve is the correct answer for this specific function.

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  • 41. 

    This type of vision allows for detailed recognition of faces, symbols, objects, and locations.

    • Ambient Vision

    • Focal Vision

    • 20/20 vision

    • Night vision

    Correct Answer
    A. Focal Vision
    Explanation
    Focal vision refers to the ability to focus on specific details and recognize them with clarity. This type of vision allows for the detailed recognition of faces, symbols, objects, and locations. It is the type of vision that we use when we need to see something clearly and in detail, such as when reading or identifying specific objects. Focal vision is different from ambient vision, which is the ability to perceive the overall environment and detect movement and general shapes.

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  • 42. 

    An occupational therapy visual assessment includes

    • Visual history

    • Visual acuity

    • Binocular visual skills

    • Visual fields

    • Inattention

    Correct Answer(s)
    A. Visual history
    A. Visual acuity
    A. Binocular visual skills
    A. Visual fields
    A. Inattention
    Explanation
    An occupational therapy visual assessment includes various components that evaluate different aspects of visual function. Visual history involves gathering information about the individual's visual experiences and any existing visual problems. Visual acuity measures the clarity of vision, while binocular visual skills assess the coordination and alignment of both eyes. Visual fields determine the extent of an individual's peripheral vision. Lastly, inattention refers to the assessment of the individual's ability to sustain attention and focus on visual tasks. All of these components together help in understanding and addressing visual impairments and their impact on daily activities.

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  • 43. 

    Treatment of low vision includes

    • Corrective lenses

    • High contrast items

    • Large print

    • Low lighting

    • Decreased clutter

    Correct Answer(s)
    A. Corrective lenses
    A. High contrast items
    A. Large print
    A. Decreased clutter
    Explanation
    The treatment of low vision includes the use of corrective lenses to improve visual acuity. High contrast items help individuals with low vision distinguish between objects and enhance visibility. Large print materials make it easier for people with low vision to read and comprehend written information. Decreased clutter in the environment helps reduce visual distractions and allows individuals with low vision to focus better. These interventions aim to optimize visual functioning and improve the quality of life for individuals with low vision.

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  • 44. 

    The peripheral system consists of the anterior visual system and the cranial nerves.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because the peripheral system does not consist of the anterior visual system and the cranial nerves. The peripheral nervous system (PNS) includes all the nerves outside of the brain and spinal cord, while the anterior visual system refers to the structures involved in vision at the front of the eye. The cranial nerves are a part of the PNS, but they do not solely make up the peripheral system.

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  • 45. 

    A visual acuity score of 20/40 means that the individual tested can see

    • At 40 feet what a typical person sees at 20 feet from the chart

    • At 20 feet what a typical person sees at 40 feet from the chart

    • At 20 feet what a typical person sees at 20 feet from the chart

    • At 40 feet what a typical person sees at 40 feet from the chart

    Correct Answer
    A. At 20 feet what a typical person sees at 40 feet from the chart
    Explanation
    A visual acuity score of 20/40 indicates that the individual being tested can see at 20 feet what a typical person with normal vision can see at 40 feet from the chart. This means that their visual acuity is slightly worse than average, as they need to be closer to see the same level of detail as someone with normal vision would see at a farther distance.

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  • 46. 

    Criteria for the referral is a visual acuity score of 20/40 or poorer, or if there is a greater than 1 line difference between the two eyes.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Greater than 2 line difference.

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  • 47. 

    When testing ocular alignment with a Maddox rod, you should test both eyes simultaneously.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    When testing ocular alignment with a Maddox rod, it is not necessary to test both eyes simultaneously. The Maddox rod is a diagnostic tool used to assess the alignment of the eyes by creating a streak of light that appears differently to each eye. To perform the test, the Maddox rod is placed in front of one eye at a time, while the other eye is covered. By comparing the position of the streak of light with a reference point, the examiner can determine if there is any misalignment present. Therefore, the correct answer is false.

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  • 48. 

    Abbreviated search patterns, organized search, re-checking of work and response to verbal cues are indicative of

    • Visual inattention

    • VFD

    Correct Answer
    A. VFD
    Explanation
    The given answer "VFD" is short for "Visual Field Deficit." Abbreviated search patterns, organized search, re-checking of work, and response to verbal cues are all characteristics that suggest visual field deficit. Visual field deficit refers to a condition where there is a loss of vision in certain areas of the visual field, leading to difficulties in perceiving and processing visual information. These symptoms indicate that the individual may have a visual field deficit.

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  • 49. 

    When testing corneal reflex, a pen light is held __ inches from the nose and the reflection of light in both pupils if observed. When performing this test, you are looking for __________

    • No reflection

    • 14: symmetry of reflection

    • 16: symmetry of reflection

    • All of the above

    • None of the above

    Correct Answer
    A. 16: symmetry of reflection
    Explanation
    When testing the corneal reflex, a pen light is held 16 inches from the nose and the reflection of light in both pupils is observed. The correct answer, "16: symmetry of reflection," indicates that during the test, you are looking for a symmetrical reflection of light in both pupils. This means that both pupils should react in the same way and show an equal response to the stimulus of the pen light.

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  • Current Version
  • Mar 19, 2023
    Quiz Edited by
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  • Aug 08, 2010
    Quiz Created by
    HeatherI725

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