Binocular Vision - Midterm 1

A change in the relative magnification at the fixation point of the two eyes can result in the tilting of the horopter. The horopter is the imaginary surface in space where objects appear single when fixated upon. When there is a change in the relative magnification, it can cause a misalignment in the images seen by each eye, leading to a tilt in the horopter. This means that the perceived location of objects in space may be distorted, causing a shift in the alignment of the horopter.

The false statement is that in the geometric effect, the patient would perceive the plane rotated toward the eye with the magnifying lens.

All of the options listed are legitimate ways to treat aniseikonia. Aniseikonia is a condition where there is a difference in the perceived sizes of images between the two eyes, and it can be treated by adjusting the front surface power, center thickness, refractive index, vertex distance, or by placing the patient in contact lenses. Therefore, all of the options are valid ways to treat aniseikonia.

Option 4 and Option 1 - refer to subjective visual space; the perceived, phenomenal or experiential spaces

pg. 22 and diagrams on pg. 20

pg. 17

Options 1 - 3 are similarities b/t the two methods

View test file page 265 problem 2 and manual pg. 11

Question was developed based on our assigned problem set, problem # 6

Based off the test file quizzes, e.g pg. 267.

In the experiments conducted on college students to study adaptation to size lenses, one false statement is that "corresponding points recalibrate." This means that the corresponding points, which are specific points in the left and right eyes that receive similar visual information, do not recalibrate or adjust during the adaptation process. This suggests that the adaptation to size lenses does not affect the alignment or coordination of these corresponding points in the students' eyes.

Option 3 - it is a direct comparison test, Possible factors influencing test results: 1) methodology, 2) angle of gaze, 3) sensory fusional response that rescales the image (red-green target).

When oblique magnification occurs at a 45-degree angle in the OS (left eye) and magnification occurs at a 135-degree angle in the OD (right eye), the upper part of the image will appear farther away and larger. This means that objects in the upper part of the image will appear to be at a greater distance from the viewer and will also appear larger in size.

Option 3 - is false. Method can be done with pencils. The locations perceived as lying in the same distance from the subject as the fixation point. This is the EASIEST to measure

View manual pg. 11

Option 4 is false b/c the VM circle changes shape at each fixation distance. In this case we only changed the position of the rod not the fixation distance.

DRAW the diagram!
View test file pg. 263, problem 6.

Option 1 is in regards to induced effect

The theoretical horopter is based on the assumptions that eyes are spherical and that the corresponding retinal points are symmetrically distributed across the retina in each eye. These assumptions are important because they help in determining the point of fixation and the binocular disparity, which is necessary for depth perception. The spherical shape of the eyes ensures that the light rays converge at the fovea, while the symmetric distribution of retinal points allows for the fusion of the two retinal images. These assumptions also help in establishing a fixed distance for the horopter, as they provide a consistent reference point for the visual system.

Based off test file question - pg. 271 problem 6. Person got full credit and this concept was discussed in lab.

Pg. 26 in the manual

Pg. 26 in the manual