Unilateral reduction in VA (Orthotropia)
1. What is Orthotropia
No deviation in visual axis
2. Cause of Unilateral reduction in VA
Refractive error not fully corrected
Amblyopia
Refractive
Deprivation
Pathological
Cataract
Vitreous hemorrhage
AMD
Cornea oedema
Diabetic retinopathy
Sensory adaptation
Supression
HARC
Microtropia
Eccentric fixation
HARC
Pseudoheterophoria
During alternating CT
Peripheral fusion
Heterophoria
DEcompensated
3. Management
Correct refractive error
Treat amblyopia
Refractive correction
Eye Patch
Dichoptric video games
Remove pathological cause