Impairment of visual acuity in bright light can be explained by

safaTerkawi

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2022-08-11

Impairment of visual acuity in bright light can be explained by.

Random light scattering when there is deficient pigmentation of the eye due to albinism.
Random light scattering when there is asymmetrical corneal curvature due to astigmatism.
Random light scattering in the cornea when there is vitamin A deficiency.
Impairment of rod function when there is vitamin A deficiency.
Inability to alter the focal length of the lens when a cataract is present.

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safaTerkawi

2022-08-11

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A. True Normally absorption of light by dark pigment in the choroid prevents back-scattering of light into the retina.

B. False There is a refractive error but not random light scattering.

C. True Lack of vitamin A leads to keratin deposition in corneal epithelium (xerophthalmia).

D. False Rod function does not determine acuity in bright light.

E. False Impairment of acuity with cataract is due to random scattering by lens opacities.

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