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 plugs are tiny, biocompatible devices inserted into tear ducts to block drainage. This increases the eye's tear film and surface moisture to relieve dry eyes. Also known as punctum plugs, lacrimal plugs or occluders, these devices often are no larger than a grain of rice.Punctal plugs usually are considered when non-prescription or prescription eye drops fail to relieve your dry eye condition.lso known as punctum plugs, lacrimal plugs or occluders, these devices often are no larger than a grain of rice. Punctal plugs usually are considered when non-prescription or prescription eye drops fail to relieve your dry eye condition.