http://www.youreyesite.com/cancer.htm
Cancers of the eyelids and conjunctiva may also occur. These lesions are usually treated by surgical excision (removal by surgery). Dangerous cancers of the eyelids usually appear as small, non-lobulated, red lesions with irregular edges. They may itch or be tender. It is likely that the lesion has appeared recently or has changed in size and appearance. If you have a lesion that resembles this description, please visit your eye doctor to have the lesion observed. Dangerous cancers of the conjunctiva are rare but may appear as dark brown spots on the white part of the eye that have gradually increased in size over time