BRS Low Vision Aids & Devices 5

Question 1

A patient with 5° of remaining visual field (tunnel vision) is seeking a device to improve mobility awareness. Which optical strategy is MOST appropriate?

Accepted Answer

Reverse telescope (minifier) to condense a wide field into the remaining vision

Answer

A reverse telescope (minifier) reduces image size but expands the effective field of view, helping patients with severe field constriction perceive more of their environment.

Question 2

According to low vision practice standards, what is the MINIMUM print size that is considered functional for independent reading?

Accepted Answer

1M (approximately 20/100 print equivalent at 1 meter)

Answer

1M print size (equivalent to approximately 20/100 at 1 meter) is commonly cited as the threshold for functional independent reading in low vision standards.

Question 3

Which factor MOST influences the choice between a monocular and binocular telescope for a low vision patient?

Accepted Answer

The degree of interocular acuity difference and binocular suppression potential

Answer

Significant interocular acuity asymmetry or suppression risk makes binocular telescopes impractical, favoring the monocular design for the better-seeing eye.

Question 4

A patient with diabetic macular edema and fluctuating vision complains that their prescribed magnifier sometimes seems too weak and other times adequate. The BEST advice for the BRS to give is:

Accepted Answer

Recommend flexible electronic magnification that can be adjusted day-to-day

Answer

Electronic magnifiers allow real-time magnification adjustment, making them ideal for patients with fluctuating vision who need different levels of magnification on different days.

Question 5

What is the primary role of anti-reflection (AR) coating on low vision spectacle lenses?

Accepted Answer

To reduce internal lens reflections that decrease contrast and increase glare

Answer

AR coating eliminates internal surface reflections within the lens, which significantly improves contrast sensitivity and reduces distracting glare for low vision patients.

(BRS) Blind Rehabilitation Specialist Certification Practice Test

(BRS) Blind Rehabilitation Specialist Certification Practice Test

BRS Low Vision Aids & Devices 5