As the cells die, the tumor shrinks, but it usually does not disappear entirely. The most promising widely available method for irradiating medium choroidal melanoma involves constructing a small plaque with radioactive pellets glued to one side. Doctors who take care of patients who have choroidal melanoma are enthusiastic about the possibilities for this treatment, but satisfactory information about long-term results is not available. Your doctors recognize that they have a responsibility to current and future patients with choroidal melanoma to test radiation in a clinical trial. Surgery is performed first to sew small metal clips to the sclera so that the particle beam can be aimed accurately.
Treatment is given over several successive days.
The equipment needed for these treatments is available only in a few centers in the world. Good results have been reported in some patients, but many patients treated in this way have been followed for only a few years. Therefore, the long-term results of these forms of radiation therapy compared with the more commonly used plaque are unknown. Over the years, other treatments have been used for a small number of patients. Photocoagulation using white light or laser light has been used to burn small tumors, and cryo-therapy has been used to kill the tumors by freezing them.