Chapter 13: Low Vision

Question 1

Legal Blindness

Answer 1

A best corrected visual acuity of 20/200 or worse, or a visual field reduced to 20 degrees or less (in the best seeing eye)

Question 2

Low Vision

Answer 2

A significant limitation in visual capacity resulting from disease, trauma, or a congenital condition that cannot be corrected to a normal range with refraction.
Visual acuity and peripheral vision need to be evaluated

Question 3

Functional Vision

Answer 3

Visual acuity and peripheral vision, and visual processing sufficient for the person to carry out their normal activities

Question 4

Visual Acuity

Answer 4

The measurement of the eye’s ability to see detail

Question 5

Common Causes of Low Vision

Answer 5

1) Cataracts
2) Trauma
3) High refractive errors
4) Corneal scarring
5) Onchocerciasis (River Blindness)
6) Diabetic retinopathy
7) Congenital
8) Retinopathy of prematurity
9) Vitamin A deficiency

Question 6

Low Vision Aids

Answer 6

1) Magnifiers and Reading Glasses
2) Increased lighting and Reducing Glare

Question 7

Low Vision Devices

Answer 7

1) Eyeglasses
2) Handheld magnifiers
3) Telescopes
4) Enlarged printed materials
5) Projection devices