age of onset between 6 months and 4 years(usually at 18 months)
occasionally then one eye divergens patient close this eye in bright light
sometimes diplopia occurs
once suppression has been triggered by the eye drifting out
patients have a larger binocular peripheral visual field than normal people
typical cases have stereoacuity at near, this is where most patients control their deviation
full correction of refractive error
prism base-out glasses facilitating actions of the weakened muscles
eye exercises strengthening binocular vision
sometimes botulinum toxin iniection to the muscles is required
strabismus surgery is required only then intermittent exotropia appear
spectacles according to the refraction with prism is the best solution
eye excercises improving fusion amplitude are also effective
Fig.5Congenital exotropia in 3-month-year child
Fig.6. Eleven-year-old with congenital exotropia.
This form of strabismus is very rare present since birth.Fig5. Exotropia is a manifest outward deviation of the visual axis of one or both eyes. One eye and then the fellow eye fixes alternatively in the primary position.Fig.6.