nystagmus blockage syndrome
cycloplegic drops shoul be used (atropine,homatropine)
patiens with great hyperopia should wear full correction glasses sometimes bifocals
exercises to relax accommodation
overconvergence associated with accommodation tend to lessen as the child grows older and may disapper in adults.
DEPRIVATION (SENSORY) ESOTROPIA
This condition is an esotropia secondary to unilateral blidness .(Fig.14)
Fig.14.A 7-year- old patient with congenital cataract in the right eye. Note sensory esotropia and torticollis ocularis.
unilateral eye diseases ( congenital cataract, leucoma cornea, atrophia nervi optici, toxoplasmosis, retinal tumors, foveal damage, trauma lesion)
Consecutive esotropia or persistent esotropia may be present after exodeviation surgery.(Fig.15,16)
Fig.15 A 7-month–old patients with congenital exotropia before strabismus surgery.
Fig.16 Consecutive esotropia. The same patient - 4 years after exotropia surgery.