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Abstract The early diagnosis of different refractive errors and other predisposing factors of ambylopia can be achieved in verbal and non verbal child by variable methods which suitable for different age groups. This diagnostic techniques play role in determining the method of treatment. Traditional therapy for anisometropia includes refractive correction with spectacles or contact lenses. Spectacle correction of significant anisometropia produces aniseikonia. Aniseikonia of more than 5% to 6% (typically present with 3.00 or more diopter of anisometropia) cannot be readily fused. An occasional child will experience diplopia due to the aniseikonia. Thus, glasses for moderate to severe anisometropia are commonly not well tolerated. Spectacles for anisometropia of more than 2.00 to 3.00 diopter are also cosmetically problematic because of the differential magnification or minification effect of the hyperopic or myopic lens, respectively. Parents and children often complain of a noticeable size difference in the appearance of the eyes through such spectacles. |