BRS BRS Visual Anatomy & Pathology 2

Question 1

Retinitis pigmentosa (RP) is characterized by which pattern of vision loss?

Accepted Answer

Peripheral vision loss progressing inward

Answer

Retinitis pigmentosa is a hereditary degenerative disease that causes progressive peripheral vision loss (tunnel vision) as rod photoreceptors deteriorate from the periphery inward.

Question 2

What is the fovea, and why is it significant in visual rehabilitation?

Accepted Answer

The area of highest cone density providing sharpest central vision; its loss severely impacts acuity

Answer

The fovea is a small pit at the center of the macula with the highest density of cones, providing the clearest, most detailed vision; its damage (as in AMD) causes severe central vision impairment.

Question 3

Hemianopia refers to which type of visual field loss?

Accepted Answer

Loss of half the visual field in one or both eyes

Answer

Hemianopia is the loss of vision in half of the visual field, typically resulting from damage to the optic tract, optic radiation, or visual cortex (commonly after stroke).

Question 4

Which condition involves an irregular curvature of the cornea, causing distorted and blurred vision?

Accepted Answer

Keratoconus

Answer

Keratoconus is a progressive eye disease where the cornea thins and bulges into a cone shape, causing significant visual distortion that may require specialty contact lenses or corneal transplantation.

Question 5

What is nystagmus, and how does it affect visual function?

Accepted Answer

Involuntary rhythmic eye movements that reduce visual acuity and stability

Answer

Nystagmus consists of involuntary, repetitive eye movements that reduce visual acuity, affect gaze stability, and can interfere with reading and mobility tasks.

(BRS) Blind Rehabilitation Specialist Certification Practice Test

(BRS) Blind Rehabilitation Specialist Certification Practice Test

BRS BRS Visual Anatomy & Pathology 2