Exam 2-Unit 11: Vision

Question 1

Correctable vision impairments?

Answer 1

Astigmatism

Myopia

Hyperopia

Presbyopia

Question 2

Legally blind vs Low vision levels

Answer 2

Legally blind: 20/200

Low vision: 20/70 (&/or visual constriction of 20° or more). Cannot be corrected even with surgery.

Question 3

Blind eye disease

Answer 3

2nd only to cancer as the most feared disease
Affects 1/10 people over 65 & 1/4 over 75

Question 4

Components of vision

Answer 4

Sensory component
Motor component
Cognitive component

Question 5

Sensory component of vision:

Answer 5

Visual acuity
Contrast sensitivity
Visual field

Question 6

Motor component of vision:

Answer 6

Oculomotor function (saccades, smooth pursuits, convergence)
Binocular vision (eye alignment, accommodation)

Question 7

Cognitive component of vision:

Answer 7

Visual perception
Visual attention
Visual search

Question 8

What is the presentation of Age-related Macular Degeneration?

Answer 8

Central vision loss

Question 9

What are the 4 most common eye diseases?

Answer 9

1. Age-related macular degeneration (leading cause of vision loss in older adults)
2. Glaucoma
3. Diabetic retinopathy
4. Cataract

Question 10

How can you address Macular Degeneration?

Answer 10

Scotoma (blind spots) awareness training
Eccentric viewing: after teaching them ^, they can use unaffected areas of vision, areas around their fovea.

Question 11

What causes Glaucoma

Answer 11

Pressure within the eye = optic nerve damage.

Presents with Peripheral vision loss.

Question 12

Best way to improve environment for low vision?

Answer 12

Add lighting–”natural spectrum lighting” is the best option