P you might possibly offer definitions of key terms, although it is often a good idea to save this until you use these words in the essay and you can then offer definitions when they become relevant to the reader rather than hitting them with all of the definitions in a big, boring, confusing mass right at the start.
Thygeson's superficial punctate keratopathy (TSPK; also Thygeson Superficial Punctate Keratitis) is a disease of the eyes. The causes of TSPK are not currently known, but details of the disease were first published in the Journal of the American Medical Association in 1950 by Phillips Thygeson-after whom it is named. patient with TSPK may complain of blurred vision, dry eyes, a sensation of having a foreign body stuck in the eye, photophobia (sensitivity to bright light), burning sensations and watery eyes.
Punctal Occlusion (tear drainage duct occlusion) is a procedure that eye doctors use to improve the symptoms of dry eye syndrome. Punctal occlusion consists of inserting punctal plugs (silicone or collagen) into the tear drainage area of the eye to keep the tears in the eyes longer.he goal of punctal occlusion is to slow the drainage of the tears to keep the tears on the eye longer for added lubrication. Punctal plugs are very small biocompatible devices that are inserted into the lacrimal punctum.