Concomitant exotropia

Concomitant exotropia refers to a condition where one eye fixates while the other deviates outwards. The deviation of the eye position does not change with the direction of gaze, nor does it change with the fixating eye. There is no significant restriction in eye movement. It can be divided into two types: Primary concomitant exotropia: This includes exophoria, intermittent exotropia, and constant exotropia. It often starts as exophoria, further developing into intermittent exotropia and constant exotropia. This may be related to the weakening of accommodative convergence with age. Secondary concomitant exotropia: Sensory exotropia: Caused by poor vision in one eye. Post-surgical exotropia: Caused by overcorrection after strabismus surgery for esotropia. This condition is common in children. The main symptom is eye deviation, and the degree of strabismus increases when illness or fatigue occurs.