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Photokeratitis or ultraviolet keratitis is a painful eye condition caused by exposure of insufficiently protected eyes to the ultraviolet (UV) rays from either natural (e.g. intense direct or reflected sunlight) or artificial (e.g. the electric arc during welding) sources. Photokeratitis is akin to a sunburn of the cornea and conjunctiva.
Closed-eye hallucinations and closed-eye visualizations ( CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause stimulates the eye.
The That's Not Funny, That's Sick album is a collection of sketches, several of which were taken from the National Lampoon Radio Hour, a radio show that was broadcast on 600 radio stations from late 1973 to the end of 1974. The That's Not Funny, That's Sick album was released on vinyl in 1977. The sketches on That's Not Funny, That's Sick star ...
Computer vision syndrome. Computer vision syndrome ( CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
Amaris Encinas, USA TODAY. August 9, 2024 at 8:22 PM. Glaciers in the Swiss Alps don’t look like they used to, with one tourist’s viral vacation photo illustrating the effects of a warming ...
Health effects of sunlight exposure. Exposing skin to the ultraviolet radiation in sunlight has both positive and negative health effects. On the positive side, exposure allows for the synthesis of vitamin D 3. Vitamin D has been suggested as having a wide range of positive health effects, which include strengthening bones [ 1] and possibly ...
Dr. Dennis Gross DRx SpectraLite Dpl FaceWare Pro. $455. Though a pricier option, it's a foolproof red light device that sits atop the skin to deliver both red- and blue-light therapy across the ...
"When Hell freezes over" [2] and "on a cold day in Hell" [3] are based on the understanding that Hell is eternally an extremely hot place. The "Twelfth of Never" will never come to pass. [4] A song of the same name was written by Johnny Mathis. "On Tibb's Eve" refers to the saint's day of a saint who never existed. [5] "When two Sundays come ...