Retinoblastoma is the most common eye tumor of the childhood and always congenital with frequently positive family history. Approximately 65,%´ of the cases are unilateral, are generally far advanced when first seen, and are treated by enucleation. In 35%, tumors are found in both eyes; in these, it is usual to enucleate the more severely involved eye because it hardly can be maintained useful vision and to irradiate the less involved eye in an attempt to preserve sight.
Recently, 5 year survival and preservation of sights were improved with uses of modified technique and sharp-edged megavoltage beam and post-operative irradiation.
Retinoblastoma in the 67 year old man was treated with enucleation followed by post-operative irradiation. In the adult population, true incidence of this entity is very difficult to ascertain but it seems to be extremely rare.
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