Inclusion Criteria:  Aged between 18 months and 14 years Had a primary diagnosis of congenital cataract. Underwent cataract extraction between the ages of 2 and 24 months  Exclusion Criteria:  Primary IOL implantation Pre-existing ocular disease which might affect the location and outcome of secondary IOL implantation (including and not restricted to microphthalmia, microcornea, microcornea, corneal opacity, pseudopterygium, iris anomaly, glaucoma diagnosed before cataract extraction, uveitis, persistent fetal vasculature or trauma) Suture fixation for secondary IOL implantation