The Exotropias

Question 1

What are the different types of exotropias

Answer 1

1. congenital/infantile exotropia
2. intermittent exotropia
3. divergence excess
4. basic exotropia
5. convergence insufficiency
6. decompensated exotropia
7. consecutive exotropia
8. sensory exotropia

Question 2

Exotropias are more frequent in _____, asian, and AA, and more common in regions closer to the equator. ______ is rare due to intermittency. _____ and ____ patterns are common which is seen in OIO and OSO. Neurologic etiologies are common in infantile exotropia and adult onset exotropia.

Answer 2

females; amblyopia; A; V

Question 3

What happens when you have OIO in exotropia

Answer 3

A pattern: exotropia greater on down gaze

V pattern: exotropia greater in upgaze

Question 4

Congenital/infantile exotropia is rare unless craniofacial/neurologic problems exist. Age of onset is

Answer 4

1; 80; -3.50

Question 5

What are motor anomolies of congenital exotropia

Answer 5

1. limited adduction on versions, not ductions
2. DVD (dissociated vertical deviations)
3. overaction of inferior or superior obliques (A, V, or X pattern)

Question 6

In order to treat congenital/infantile exotropia you need to rule out _____ etiology first! Then correct for RE, treat any amblyopia, consider surgery weighing neurologic fragility (prior to 10 months if possible) - lateral rectus recession is performed. It has a poor prognosis for normal binocular vision

Answer 6

neurologic