Abstract:

Fifty cases of microtropia were analysed which included 49 cases of ecotropia and one case of exotropia. 74% of cases were children, No subjective symptomes were experiened except for lowered vision. The clinical characteristics consisted of less than 10 prism diopter heterotropia combined with some degrees of ambluopia, anisometropia, eccentric fiation and harmonious anomalous retinal correspondence. The amblyopic eye had an inhibiticus scotoma under normal binocular condition with certain degrees of binocular function. The methods of examination in common use were cover-uncover test, 4 prism base-out and dase-in test. It must be differentiated from the anisometropic amblyopia. The treatment was directed to overcome the amblyopia mainly adopting the coyer method.