Low Vision

Question 1

Presbyopia

Answer 1

Difficulty focusing on near objects

Question 2

Central Vision System

Answer 2

Analyzes a visual target in terms of its details, color, shape, and texture

Question 3

Peripheral Vision System

Answer 3

Provides background information about one’s position in relation to the environment and is quick to detect emotion

Question 4

Primary Visual Aging Changes

Answer 4

• Strength of muscles and tone decrease
• Sclera and iris show signs of degeneration
• Pupils become smaller
• Lens of the eye becomes thicker, more inflexible, and more opaque

Question 5

Cataracts

Answer 5

• Central vision loss
• Lens of the eye becomes more opaque, and a reduction of light going to the retina occurs
• Reduced visual acuity
• Blurry vision
• Decreased ability to distinguish colors
• Cannot drive at night
• Distortion of visual images
• Increased glare sensitivity
• Increased difficulty distinguishing similarly colored objects

Question 6

Age-Related Macular Degeneration

Answer 6

• Central vision loss
• Impaired mobility skills
• Reduced ability to perform ADLs and IADLs
• Decreased ability to recognize faces and perform detail work
  Difficulty recognizing facial expressions and gestures

Question 7

Glaucoma

Answer 7

• Peripheral vision loss
• Deficitis in ambulation, reading, writing
• Pressure in the eyes leads to damage to the optic nerve

Question 8

Diabetic Retinopathy

Answer 8

• Fluctuating vision loss
• Blurry vision
• Reduction in contrast sensitivity
• Decrease in ability to drive at night
• Reduction in color discrimination
• Patchy spots of visual field loss
• Total blindness