[A typical treatment of a case of bilateral retinoblastoma].

The treatment of bilateral retinal tumors requires very delicate decisions. The author used to follow the same procedures as his colleagues, that is enucleation of the worse eye and conservative treatment of the other eye. But the case he presents induced him to modigy his view. Enucleation of the right eye was planned. Prior to enucleation it was irradiated prophylactically together with the left eye. A few days after irradiation, the tumor became inexpectedly smaller and could be destructed by photocoagulation. The left eye was treated in the same way. The girl has now been followed for 5 years. Her visual acuity is reduced to peripheral vision on the right eye and to 0.7 on the left eye. Upon the last control in May 1976 no new lesions or recurrences were observed.