The various treatment modalities for retinoblastoma includes:
Enucleation of the eye – Most patients with unilateral disease present with advanced intraocular disease, so usually undergo enucleation, which results in a cure rate of 95%. In bilateral Rb, enucleation is usually reserved for eyes that have failed all known effective therapies or without useful vision. External beam radiotherapy (EBR) – The most common indication for EBR is for the eye in a young child with bilateral retinoblastoma who has active or recurrent disease after completion of chemotherapy and local therapies. However, patients with hereditary disease who received EBR therapy are reported to have a 35% risk of second cancers. Brachytherapy involves the placement of a radioactive implant (plaque), usually on the sclera adjacent to the base of a tumor. It used as the primary treatment, or more frequently, in patients with small tumors or in those who had failed initial therapy including previous EBR therapy. Thermotherapy involves the application of heat directly to the tumor, usually in the form of infrared radiation. It is also used for small tumors. Laser photocoagulation  is recommended only for small posterior tumors. An argon or diode laser or a xenon arc is used to coagulate all the blood supply to the tumor. Cryotherapy induces damage to the vascular endothelium with secondary thrombosis and infarction of the tumor tissue by rapidly freezing it. It may be used as primary therapy for small peripheral tumors or for small recurrent tumors previously treated with other methods.
With proper medical attention, infections can usually be successfully treated without long-term visual loss. In non-humans
Feline eosinophilic keratitis — affecting cats and horses; possibly initiated by feline herpesvirus 1 or other viral infection. See also
Chronic superficial keratitis, or pannus, for the disease in dogs
Thygesons superficial punctate keratopathy
Keratoendotheliitis fugax hereditaria

References
External links

Facts About the Cornea and Corneal Disease The National Eye Institute (NEI)
Filimentary keratitis