<qa>  What is the treatment of choroidal melanomas?Patients with choroidal melanomas who are offered ruthenium plaque radiotherapy have their plaque sutured to the sclera under general anaesthesia. The plaque is removed in a few days after delivering the required radioactive dosage to the tumour. While the plaque is in situ, patients require analgesia. The management of post-operative pain is generally not considered a high priority, more importance being given to the regression of the melanoma. 