BRS Evaluation of Visual Impairment 3

Question 1

Which chart specifically measures near visual acuity in a way that accounts for working distance, making it especially useful in low vision evaluations?

Accepted Answer

MNRead Acuity Chart

Answer

The MNRead Acuity Chart measures near acuity, reading speed, and critical print size at a fixed working distance, providing functional reading information beyond simple acuity.

Question 2

A rehabilitation specialist evaluates a client with diabetic retinopathy and notes fluctuating visual acuity across sessions. The most important first step is to:

Accepted Answer

Refer back to the ophthalmologist to ensure the condition is medically stable before prescribing devices

Answer

Fluctuating acuity in diabetic retinopathy may indicate active disease, so medical stability must be confirmed before finalizing an optical prescription.

Question 3

The 'log unit' system used in contrast sensitivity and visual acuity measurement is preferred because:

Accepted Answer

It creates an equal-ratio scale that better reflects the perceptual and neural response to visual stimuli

Answer

The logarithmic unit scale reflects the compressive, equal-ratio nature of sensory perception and allows uniform statistical analysis across the range of visual function.

Question 4

A client with advanced glaucoma demonstrates a 'tubular' visual field of approximately 10 degrees. Which daily living activity is most immediately threatened by this presentation?

Accepted Answer

Safe pedestrian travel and avoiding obstacles in the environment

Answer

Severe constriction of the visual field to 10 degrees dramatically impairs mobility and the ability to detect hazards in the environment, making safe travel the most immediate concern.

Question 5

When assessing a client's ability to detect a target on the Amsler Grid, the specialist notes metamorphopsia. This finding most likely indicates:

Accepted Answer

Distortion of the photoreceptor mosaic typically associated with macular pathology

Answer

Metamorphopsia (distortion of straight lines on the Amsler Grid) indicates disruption of the regular mosaic of cone photoreceptors, typically from macular edema or subretinal fluid.

(BRS) Blind Rehabilitation Specialist Certification Practice Test

(BRS) Blind Rehabilitation Specialist Certification Practice Test

BRS Evaluation of Visual Impairment 3