????? ??? ??, ?? ??? ??? ??? ? ?? ?? ??????. ???? ???? ??? ? ?? ?? ??? ?????. ???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????. ??? ?? ??: ???? ??? ??? ? ?? ?? ??? ?? ???? ?????. Retinoblastoma is a malignant tumor with the producing retina that occurs in kids, usually just before age 5 y