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The cornea is responsible for most of the refraction of the eye. For a normal emmetropic...

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Medical Sciences

The cornea is responsible for most of the refraction of the eye.For a normal emmetropic eye, approximately what percentage of therefraction in diopters is the typical lens accommodation in a 20year old person relative to the refraction of the cornea?

A.

52%

B.

26%

C.

4.7%

D.

14%

Which of the following is an exception to the assertion that theonly step in the visual system that requires light is theconversion of 11-cis retinal to all-transretinal?

A.

Color opponent P retinal ganglion cells

B.

Motion sensitive Y ganglion cells

C.

W retinal ganglion cells that project to the superiorcolliculus

D.

Melanopsin containing ganglion cells

Answer & Explanation Solved by verified expert
3.9 Ratings (778 Votes)
1 Option A 52 The total refractive power of human eye is 60 dioptre in which 21 dioptre is contributed by the ocular lens and remaining 40 dioptre is contributed by the cornea so the percentage of refraction by the lens relative to the refraction of the cornea will be refraction of    See Answer
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