We present here, the case of a monophtalm patient, with the diagnostic of an intraocular tumour, situation when we have chosen a combination of conservative therapeutically means. Enucleation, as a radical method of treatment, is out of the question. We discuss, by turns, the main alternatives of conservative treatment: sclerochoroido-retinectomy, temporary fixation on the supraiacent sclera of radioactive discs, photocoagulation and cryocoagulation as single methods of treatment, justifying the present option: laser treatment associated with cryocoagulation and immunotherapy. We review some basic concepts of immunology, insisting upon the systemic and topical administration of IL-2. Up to the present, IL-2 is administrated topically only in pulmonary cancer and in cerebral tumours, after the operation, on the excision zones and in cutaneous malignant melanoma, with very good results. In ophthalmology, this is the first therapeutically attempt, using IL-2 in a case of intraocular tumour. The postoperative status and the results on short term put an end to this paper.