<prompt> A 5 year old boy presents with leucocoria in the right eye which is diagnosed as diffuse retinoblastoma involving the entire globe. Examination of the left eye revealed a small 2-3 mm tumor in the periphery. What will be the ideal management of this patient?Enucleation of both eyesEnucleation of right eye and observation for left eyeEnucleation of right eye and focal therapy of the left eyeSix cycles of chemotherapy  <response>: Ans. c Enucleation of right eye and focal therapy of the left eyeRef: Yanoff 2e, p. 1047; Other ReferencesBilateral retionoblastoma with largediffuse retinoblastoma in eyeLarge tumorDiffuse tumor Full globeSmall tumor in fellow eyeNormal fellow eyeSmall tumor in fellow eyeNormal fellow eyeChemotherapy for large tumor plus focal therapy for small tumor in fellow eye.EnucleationEnucleation for diffuse tumor plus focal theraphy for small tumor in fellow eyeEnucleation for diffuse tumor 