Visual Acuity

Question 1

What are the 4 reasons why taking acuity in an amblyopic patient is difficult?

Answer 1

1. Sensitivity to contour interactions
2. Abnormal spatial distortion
3. Unsteady fixation
4. Poor tracking

Question 2

What are the advantages of an ETDRS chart?

Answer 2

1. Standardized crowding
2. Equal number of letters per line
3. More intervals of acuity

Question 3

What are the benefits of using interferometry on an amblyopic patient?

Answer 3

1. Bypasses optics of eye

2. Bypasses sensory and motor deficits that decrease acuity