Albinism is a general term for a group of genetic disorders with pigment deficiencies that have a high degree of genetic heterogeneity. Depending on the site of pigment deficiency and the presence or absence of other manifestations, it can be divided into three categories, namely: 1. ocular albinism (OCA), in which the eye, skin, and hair have pigment deficiency; 2. ocular albinism (OA), in which only the eye has pigment deficiency; and 3. ocular albinism (OA), in which both the ocular and cutaneous albinism phenotypes are present. Hermansky-Pudlak svndrome (HPS) and Chediak-Higashi syndrome (CHS), which have both ocular and cutaneous albinism phenotypes and other abnormalities.