Objective:To determine the genetic mutation site of a family with congenital aniridia.Methods:After the genomic DNA was extracted,all exons of the human PAX6 gene were amplified by Polymerase chain reaction (PCR) and allele specific variations were detected by single strand conformation polymorphism (SSCP) followed by automated sequencing.The superimposed mutant PCR products were subcloned into pGEM-T vector and sequenced to confirm the mutation.Result:A mutation located in the 5' untranslated region (UTR) ...