air cataract
31Hyperbaric medicine — Hyperbaric medicine, also known as hyperbaric oxygen therapy (HBOT) is the medical use of oxygen at a higher than atmospheric pressure. Uses Several therapeutic principles are made use of in HBOT: *The increased overall pressure is of therapeutic …
32List of Indian inventions — [ thumb|200px|right|A hand propelled wheel cart, Indus Valley Civilization (3000–1500 BCE). Housed at the National Museum, New Delhi.] [ 200px|thumb|Explanation of the sine rule in Yuktibhasa .] List of Indian inventions details significant… …
33Ozone depletion — Image of the largest Antarctic ozone hole ever recorded (September 2006) Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth s… …
34Egypt — /ee jipt/, n. 1. Arab Republic of. a republic in NE Africa. 64,791,891; 386,198 sq. mi. (1,000,252 sq. km). Cap.: Cairo. Arabic, Misr. Formerly (1958 71), United Arab Republic. 2. an ancient kingdom in NE Africa: divided into the Nile Delta… …
35Grand Canyon — This article is about the canyon in the southwestern United States. For other Grand Canyons, see Grand Canyon (disambiguation). Grand Canyon …
36Launceston, Tasmania — Infobox Australian Place type = city name = Launceston state = tas imagesize = 270 caption = Launceston City pop = 99,675 pop footnotes = Census 2006 AUS | id = 61505 | name = Greater Launceston (Statistical Subdivision)|quick =… …
37Victoria Falls — Location Livingstone, Zambia Victoria Falls, Zimbabwe Coordinates …
38Retinal detachment — Classification and external resources Slit lamp photograph showing retinal detachment. ICD …
39Harold Ridley (ophthalmologist) — Sir Nicholas Harold Lloyd Ridley [1][2] (10 July 1906, Kibworth Harcourt, Leicestershire – 25 May 2001, Salisbury, Wiltshire) was an English ophthalmologist who pioneered artificial intraocular lens transplant surgery for cataract patients.… …
40perception — perceptional, adj. /peuhr sep sheuhn/, n. 1. the act or faculty of apprehending by means of the senses or of the mind; cognition; understanding. 2. immediate or intuitive recognition or appreciation, as of moral, psychological, or aesthetic… …
