What does anisometropia mean?

Anisometropia is a type of ametropia, which refers to the difference in the nature or degree of refractive state of the two eyes.

Anisometropia may be caused by imbalance in the development of the ocular axis, or may be caused by various corneal or inner eye operations, congenital diseases, trauma, etc. Anisometropia has different types, and can be divided into homogeneous anisometropia and heterogeneous anisometropia according to the refractive nature. Anisometropia can also be divided into simple anisometropia, compound anisometropia, simple astigmatism, compound astigmatism, or other types according to the refractive type.