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Malignant lesions about the eyelids and the adjacent skin respond favorably to radiation therapy. The protection of the eyeball during these treatments is most important. A lead eyecup has been used for this for a long time. The technic for its use is as follows:
The conjunctiva and cornea are anesthetized with a drop or so of a surface anesthetic, such as 2 per cent pontocaine hydrochloride. The upper lid is then lifted and the eyecup shield inserted into the conjunctival cul-de-sac. The lower lid is raised and lifted over the lower rim of the eyecup. The eyecup is then firmly held in place both by the potential vacuum between the inner surface of the eyecup and the convex outer surface of the eyeball and by the pressure of the lids on the outer surface of the eyecup. The lesion to be treated is then irradiated after proper shielding of