Ocular Motility Photography
Strabismus

Gary E. Miller, CRA
Geisinger Medical Center
Danville, PA

Illustrations by Diane Latranyi

Strabismus

Strabismus is a generic term used to describe any misalignment of the eyes often due to an imbalance of the extraocular muscles. This misalignment may develop at any age and occur in any direction. However, strabismus can be especially harmful to the development of vision in young children. If not diagnosed and treated early, visual acuity could be irreversibly damaged.

Cranial Nerve Palsies

Because the brain controls eye movement through a series of cranial nerves, observing ocular movements can often give clues to help diagnose central nervous system disorders. The III, IV and VI cranial nerves are used to control the extraocular muscles, thereby controlling eye movement. If any of these cranial nerves are compromised, ocular motility photographs will document the affected muscles limited movement.