Congenital cataract is the main cause of form deprivation amblyopia in children. Current studies confirm that form deprivation amblyopia affects the retinal nerve fiber layer. However, there are different opinions about the effect of amblyopia on the optic nerve fiber thickness around the optic disc at home and abroad. Investigators have performed "cataract extraction with IOL implantation" on children with bilateral and unilateral congenital cataract. Investigators used OCT biometry to measure children's the retinal nerve fiber layer (RNFLT) and macular thickness (CMT) before and after surgery. Investigators dynamically observed changes in RNFL and CMT to explore the retinal mechanism of form deprivation amblyopia and help guide the clinical correct understanding of postoperative follow-up time.
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RNFLT
Timeframe: 1 year
CMT
Timeframe: 1 year