Strabismus Flashcards
Strabismus
Misalignment of the visual axes of 2 eyes.
Pseudostrabismus (apparent squint)
Pseudoesotropia (associated to prominent epicanthal fold + negative angle kappa)
Pseudoexotropia (hypertelorism + positive angle kappa)
Classification of strabismus
Latent squint / Heterophoria
Manifest squint / Heterotropia
Concomitant squint
Incomitant squint
Types of heterophoria / Latent squint
Esophoria / latent convergent squint
Convergence excess type
Divergent weakness type
Non-specific type
Exophoria / latent divergent squint
Convergent weakness type
Divergent excess type
Non-specific type
Hyperphoria (deviate upwards)(rt / lft)
Cyclophoria / latent torsional deviation (incyclophoria / excyclophoria)
Types of comitant squint
Convergent (esotropia)
Infantile
Accomodative
Refractive
Non-refractive
Mixed
Essentially acquired/ late onset
Basic
Convergence excess
Divergent insufficiency
Sensory
Consecutive
Divergent (exotropia)
Congenital
Primary
Sensory
Consecutive
Vertical (hypertropia)