Amblyopia

Question 1

Unilateral or less commonly, bilateral reduction of best corrected visual acuity that can not be attributed directly to the effect of any structural abnormality of the eye or the posterior visual pathway. Defect of central vision.

Answer 1

Amblyopia

Question 2

Amblyopia is primarily a defect of ______.

Answer 2

central vision

Question 3

Is thought to result from competitive or inhibitory interaction between neurons carrying the nonfusible inputs from the two eyes.

Answer 3

Strabismic Amblyopia

Question 4

It develops when unequal refractive error in the two eyes causes the image on the one retina to be chronically defocused.

Answer 4

Anisometropic Amblyopia

Question 5

Result from large, approximately equal, uncorrected refractive error in both eyes of a young child.

Answer 5

Isometropic Amblyopia (Amblyopia Due to Bilateral High Refractive Error)

Question 6

Uncorrected bilateral astigmatism in early childhood may result in loss of resolving ability limited to chronically blurred meridians.

Answer 6

Meridional Amblyopia

Question 7

It is usually caused by congenital or early acquired media opacity. This form of amblyopia is the least common but most damaging and difficult to treat.

Answer 7

Stimulus Deprivation Amblyopia

Question 8

A form of deprivation caused by excessive therapeutic patching.

Answer 8

Occlusion Amblyopia

Question 9

A test for estimating the relative level of vision in the two eyes for children with strabismus who are under the age of about 3.

Answer 9

Binocular fixation pattern

Question 10

Directly measures acuity in children 3-6 years old

and crowding bar may help alleviate this problem.

Answer 10

Modified Snellen Technique

Question 11

In general, optical prescription for amblyopic eyes should correct the full refractive error as determined with _________.

Answer 11

cycloplegia

Question 12

It is the most powerful means of treating of amblyopia by enforced use of the defective eye. Spectacle-mounted occluder or special opaque contact lenses can be used as an alternative to full-time patching if skin irritation or poor adhesion proves to be a significant problem

Answer 12

Full-time occlusion of the sound eye

Question 13

Defined as occlusion for 1-6 hours per day.

Answer 13

Part-time occlusion

Question 14

A form of treatment has recently been demonstrated to be as effective as patching for mild to moderate amblyopia.

Answer 14

cycloplegic agent