Amblyopia

Question 1

What is amblyopia?

Answer 1

A reduction in vision in one or both eyes, persistent after correction of refractive error.
Absence of retinal pathology or any disease of the afferent visual pathway

It is the most common cause of vision loss in children which involves the interruption of normal visual development.

Question 2

Mechanism of amblyopia

Answer 2

1. Deprivation of form vision
   - could be partial or complete
   -complete : no image / stimulus reaches fovea
   - partial : degraded imaging reaches the fovea
2. Abnormal Binocular interaction

-incomplete images fall on the retina
- images are incompatible
-eye compete for control over cortical connections during development period - better eye gains control

Question 3

What does amblyopia look like?

Answer 3

Reduced Shellen and grating acuity