In retinoblastoma, after enucleation, which tissue is sectioned to find out systemic metastasis-
*After enucleation, optic nerve is examined and if it shows tumor invasion, postoperative radiotherapy to the orbital apex and chemotherapy are given. Ref: Khurana 7th/e p.317.
Central retinal aery
Sclera and episclera
Optic nerve
Voex vein
Tumors