To the Editor:Cataract and age-related macular degeneration (AMD),often develop concurrently,which are two of the leading causes of visual damages associated with aging.Sunlight is reported to contribute to the pathogenesis of both cataract and AMD.[1].In cases of cataract,less sunlight could possibly access to the ocular fundus.On this basis,lens opacity maybe a protective factor for AMD.Nevertheless,there are still disputes up to now.