Esotropia

Question 1

To be characterized as infantile ET, when must the onset occur?

Answer 1

< 6mo of age

acquired = > 6mo

Question 2

This is when ET is greatest at near; high AC/A.

Answer 2

Conv. Excess ET

Question 3

This is when ET is greatest at distance; low AC/A.

Answer 3

Div. Insufficiency ET

Question 4

This describes the appearance of ET only due to epicanthal folds or a wide, flat bridge of nose.

Answer 4

PseudoET

- BUT! 10-19% get dx with ET

Question 5

Any ET after __ months is considered abnomal.

Answer 5

2 months

Question 6

What % of infantile ETs have a DVD? OAIO?

Answer 6

DVD = 50-90%
OAIO = 78%

Question 7

Patients with a constante ET of > 40pd after 10 weeks of age, will the ET resolve?

Answer 7

unlikely

Question 8

When should sx be scheduled for a infantile ET?

Answer 8

Earlier the better

< 2 yo but not less than 6 mo

Question 9

This type of Accom. ET have moderate to high hyperopia; angle will straighten out with Rx.

Answer 9

Refractive

Question 10

This type of accom. ET describes patients who have ET at near, and need a bifocal.

Answer 10

Non-refractive

Question 11

What type of target must be used during CT to dx accom. ET?

Answer 11

Accom. target

Question 12

When does non-accom. ET onset?

Answer 12

3-6 yo

Must r/o neurological cause

Question 13

What are the 4 possible causes of acute onset comitant ET?

Answer 13

1. Following occlusion
2. Emotions/Stress
3. Idiopathic
4. Neurological cause

Question 14

This occurs following a decrease in vision in one eye. More common in younger pxs.

Answer 14

Sensory ET

Question 15

This is the 2nd most common presenting sign for retinoblastoma.

Answer 15

Sensory ET

Question 16

This is a small angle strabismus; usually associated with HAC.

Answer 16

Microtropia

Question 17

For microtropia, the

Answer 17

EF must be equal to or smaller than angle of deviation

Question 18

This is when the

Answer 18

Microtropia with identity

- patient will have unilateral decreased vision with no cause