If the chalazion doesn't settle, it may require surgery to drain the contents. This simple surgery is done under local anaesthesia. First the skin is cleaned then a drop of local anaesthetic inserted on the surface of the eye.

	Local anaesthetic is injected into the eyelid beneath the skin around the chalazion.
	A small clamp is placed and a blade used to incise the chalazion from the under surface of the eyelid.
	Old inflammatory debris is drained from the cyst and the cavity curetted.
	An empty clean duct is left after I+C.