To explore the patients genotypes and the mutation spectrum of Tyrosinase (TYR) gene and the effects on protein structure and function in oculocutaneous albinism type 1 (OCA1).The polymerase chain reaction (PCR) and sequencing techniques were applied to amplify and analyze the regions of exon, exonintron and promoter of TYR gene of 15 OCA1 probands and some of their parents