AIM: To investigate the effect of both myopic and hyperopic anisometropia on binocular vision.

METHODS:Totally 238 patients with corrected anisometropia and 30 normal children were tested with both stereogram and synoptophore for their near stereoacuity and binocular vision. The correlation of anisometropia and binocular vision was studied statistically.

RESULTS: The number of normal near stereoacuity and distance fusion range of myopic anisometropia was significantly higher than that of hyperopic anisometropia. A few of hyperopic anisometropia had normal stereopsis. Most of low anisometropia group had sub-normal stereopsis, while high, severe anisometropia group without stereopsis. Most of myopic anisometropia group had normal stereopsis or sub-normal stereopsis.

CONCLUSION: The hyperopic anisometropia produces a more profound effect. Relationship between anisometropia and stereopsis are analyzed according to nature.