Visual Acuity and Field of Vision Quiz

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Questions and Answers

Determination of extent of peripheral visual field and thereby diagnosis of blindness in specific portions of retina, is called ______.

perimetry

Optic disc produces physiological ______ (blind spot) in 15 degrees lateral to central point of vision in perimetry chart.

scotoma

Binocular vision provides detection of ______ and three-dimensional appearance of object in front of eyes.

distance

Field of vision is ______ that is seen by an eye at a given instant.

<p>area</p> Signup and view all the answers

Field of vision has ______ and temporal division.

<p>nasal</p> Signup and view all the answers

Final visual image is formed in ______.

<p>visual cortex</p> Signup and view all the answers

The principle focal distance (Focal length) is the distance between the lens and the ______ point.

<p>focal</p> Signup and view all the answers

Diopters are used to measure the refractive power of a lens in ______.

<p>meters</p> Signup and view all the answers

The human eye has a refractive power of 6 m at ______.

<p>rest</p> Signup and view all the answers

The total refractive power of the eye is about 59 D: - Cornea = 40-45 D - Lens = 15-20 D. The optics of the eye resemble those of a ______.

<p>camera</p> Signup and view all the answers

The image that falls on the retina is real and inverted, as in a ______.

<p>camera</p> Signup and view all the answers

Neural processing restores the upright appearance of the field of ______.

<p>view</p> Signup and view all the answers

The ______ light reflex helps adaptation to changes in light intensity.

<p>pupillary</p> Signup and view all the answers

When light is directed into one eye, the pupil of the other also ______.

<p>constricts</p> Signup and view all the answers

The ______ reflex involves pupillary constriction, contraction of ciliary muscles and convergence of the eyeballs.

<p>accommodation</p> Signup and view all the answers

Visual acuity is sharpest within the ______ region of the retina.

<p>foveal</p> Signup and view all the answers

The ______ chart is used to measure visual acuity.

<p>Snellen</p> Signup and view all the answers

______ vision is the degree to which details and contours of objects are perceived.

<p>Binocular</p> Signup and view all the answers

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