• Evaluation of 50 cases of microtropia that were collected within two years indicates the primary form of microtropia to be more common than the secondary form (48:2 cases). Various degrees of anisometropia were present in all cases of primary microtropia, suggesting that anisometropia is the cause rather than the consequence of microtropia.
Setayesh AR, Khodadoust AA, Daryani SM. Microtropia. Arch Ophthalmol. 1978;96(10):1842-1847. doi:10.1001/archopht.1978.03910060354012