Amblyopia

Question 1

 Unilateral or less commonly, bilateral reduction of best corrected visual acuity that cannot 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

 Nearly all amblyopic visual loss is preventable or _____________ with timely detection and appropriate intervention.

Answer 2

reversible

Question 3

 Children with amblyopia or at risk for amblyopia should be identified at a _________ when the prognosis for successful treatment is best.

Answer 3

young age

Question 4

T OR F

 Role of screening is important

Answer 4

T

Question 5

 Amblyopia is primarily a defect of ______ vision.

Answer 5

central

Question 6

Classification of amblyopia

Answer 6

1. Strabismic Amblyopia
2. Anisometropic Amblyopia
3. Amblyopia Due to bilateral high refractive error (isometropia)
4. Stimulus Deprivation Amblyopia

Question 7

 The most common form of amblyopia

Answer 7

Strabismic Amblyopia

Question 8

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

Answer 8

Anisometropic Amblyopia

Question 9

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

Answer 9

Strabismic Amblyopia

Question 10

 Second in frequency

Answer 10

Anisometropic Amblyopia

Question 11

 Mild hyperopic or astigmatic anisometropia (1-2D)

Answer 11

mild amblyopia

Question 12

T or F

 Mild myopia anisometropia (less than -3D) usually does cause amblyopia

Answer 12

F

Question 13

 unilateral high myopia (-6D)

Answer 13

severe amblyopia visual loss.

Question 14

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

Answer 14

 isometropic amblyopia

Question 15

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

Answer 15

Meridional amblyopia

Question 16

 It is usually caused by congenital or early acquired media opacity.

Answer 16

Stimulus Deprivation Amblyopia

Question 17

 This form of amblyopia is the least common but most damaging and difficult to treat

Answer 17

Stimulus Deprivation Amblyopia

Question 18

 In bilateral cases acuity can be _____ or worse.

Answer 18

20/200

Question 19

may cause mild to moderate amblyopia or may have no effect on visual development.

Answer 19

 Small polar cataracts & lamellar cataracts

Question 20

is a form of deprivation caused by excessive therapeutic patching.

Answer 20

 Occlusion amblyopia

Question 21

 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 21

Binocular fixation pattern

Question 22

 The modified Snellen technique directly measures acuity in children ____ years old.

Answer 22

3-6

Question 23

It may help alleviate this problem.

Answer 23

 Crowding bar

Question 24

 Cataracts capable of producing amblyopia require surgery without unnecessary delay.

Answer 24

Cataract removal

Question 25

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

Answer 25

Refractive correction

Question 26

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

Answer 26

Penalization

Question 27

When amblyopia treatment is discontinued after fully or partially successful completion, approximately half of patients show some degree of ______

Answer 27

Recurrence