the difference between strabismus, amblyopia, exotropia/phoria and esotropia/phoria. all on slide #3.

1. Eye am so confused… Definitions of commonly confused ophthalmology terms Plus a bonus Venn diagram! By Clinton Pong, MS 4

2. Define the following: Strabismus vsPseudostrabismus Amblyopia ExotropiavsExophoria EsotropiavsEsophoria HypertropiavsHypotropia

3. Strabismus You Amblyopia them Exotropia Esotropia Hypertropia Hypotropia

4. Strabismus Eyes do not line up aka “crossed eyes“ Pseudostrabismus Mistaken misalignment More common in Asian infants because of epicanthal folds

5. Amblyopia(subtype of strabismus) Loss of one eye's ability to see details May lead to blindness! aka "lazy eye“ Really, it is “lazy brain” Most common cause of vision problems in children VERY important to treat early and aggressively!

6. Strabismus vsAmblyopia Strabismus What YOU see on them: Crooked eyes Amblyopia What THEY see: Initially double vision (diplopia) usually compensating for a focusing problem Eventually brain compensates by causing blindness in one eye Make a referral!!!!

7. Amblyopia: types Exotropia OUTward deviation of eyes Commonly 2-4 years old Esotropia Inward deviation of eyes Infancy onward http://www.pedseye.com/

8. Amblyopia: -tropiavs -phoria ExoPHORIA Transient, temporary OUTward deviation EsoPHORIA Transient, temporary INward deviation http://www.pedseye.com/

9. Hypertropia Upward vertical misalignment Most common cause is trochlear fourth nerve palsy (SO4) Differential includes thyroid related eye disease orbital trauma Brown’s syndrome Hypotropia Downward deviation is very rare. http://www.pedseye.com/

10. Strabismus You Amblyopia them Exotropia Esotropia Hypertropia Hypotropia

11. References https://www.google.com/health/ref/Amblyopia http://www.pedseye.com/topics_amblyopia.htm http://www.health.state.mn.us/divs/fh/mch/webcourse/vision/mod4a.cfm Plus some handouts from Drs.