purpose: to report a case of hermansky-pudlak syndrome (hps). case report: a 7-year-old boy presented with marked generalized hypopigmentation, eye deviation and nystagmus. in addition he had history of easy bruising. visual acuity was 20/200. he had markedly translucent green irides, hypermetropic astigmatism, horizontal nystagmus and marked exotropia. funduscopy revealed a hypopigmented retin...