Purpose: The purpose of this study was to investigate the evolution of refraction and visual function in patients with myopic anisometropia.
Design: A retrospective study on a selected population.
Methods: Forty-six anisomyopic patients underwent a complete ophthalmologic examination (cycloplegic refraction, visual acuity, ocular movement and fundus examination).
Results: The results show two different patterns of changes in refraction between the two eyes; in the same patient, the less myopic eye tends to get more myopic, while the more ametropic eye shows a more stable refraction. Furthermore, a recovery of binocular vision and amblyopia can be obtained by occlusion and full-time refractive correction.
Conclusions: The evolution of refraction seems to be different in eyes with anisometropia and it is still to be understood whether it is fixation or reduced fixation that leads to a myopic shift.