Microtest/labtest
10 dB.
33 dB
66 dB
20 dB
Corresponds to the angle of 0? - 25? with the optical axis of an eye
Corresponds to the angle of 0? - 35? with the optical axis of an eye
Corresponds to the angle of 0? - 40? with the optical axis of an eye
Corresponds to the angle of 0? - 30? with the optical axis of an eye
Sensitivity (dB) = 10 x log (maximum intensity / set intensity
Sensitivity (dB) = 10 x ln (maximum intensity / set intensity
Sensitivity (dB) = 20 x log (maximum intensity / set intensity
Sensitivity (dB) = 20 x ln (maximum intensity / set intensity)
Expresses values of hearing improvement in decibels in comparison with the values of normal threshold of hearing
Expresses hearing loss in decibels in comparison with the values of normal threshold of hearing
Expresses hearing loss in watts per square meter in comparison with the values of normal threshold of hearing
Expresses hearing improvement in decibels in comparison with the values of normal threshold of hearing (0,5 kHz, 1 kHz, 2 kHz, 4 kHz, 8 kHz
For measuring distance between pupils of eyes
For examining visual field of eyes
For calculation of parameters of patient’s spectacles
For examination of accomodation abbility of lens
Intensity of sound
Intensity level of sound
Loudness
Loudness level
No answer is correct
V = 1/MAR
V = log MAR
Log V = - log MAR
MAR = log V
Measuring an organ of hearing
Examination of function of organ of hearing
Pre-surgery measurement of an organ of hearing
Examination of middle ear functioning
By air conduction as well as by conduction through middle ear.
By spatial conduction as well as by bone conduction
By air conduction as well as by body conduction
By air conduction as well as by bone conduction
Vertical line
Horizontal line
Slanted at the angle of 45?
Lagrange rings
Larousse rings
Legendre rings
Landolt rings
125 Hz, 250Hz, 500 Hz, 1000 Hz
100 Hz, 300 Hz, 900 Hz, 2700 Hz
50 Hz, 200 Hz, 800 Hz, 3200 Hz
Son
Decibel
Watt per square meter
No answer is correct
Frequencies on the horizontal line
Intensity levels on the horizontal line
The horizontal line corresponds to the left ear
For description of minimum distance of eyes
For determination of stereoscopic parallax
For description of angle resolution of eye
For design of glasses
V = 1/MAR
V = log MAR
Log V = - log MAR
MAR = log V
10 mm
34 mm
340 nm
1 mm
No answer is correct
Called focal length
Called optical power
Called refractive index
Called optical radius
A point from which the eye can see sharply without accomodation
In finite distance for a normal eye
In infinite distance for a normal eye
A point from which an eye can see sharply at maximum accomodation
Is basis of evaluation of color perception
Is basic resolution of colours
Equals 1 by human eye
Equals 5 by human eye
Is eye resolution limit
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