Wikipedia:Reference Desk/Archives/Science/2013 September 14 ...
The human vision system gets its fine detail from the total light intensity, not from any one colour. From this you would expect to see a thin white line on a black background as a red and green line next to each other. Newspapers, magazines, reviews of the industry, ... Read Article
Eye surgery Jobs - Frank's Hospital Workshop
Although the terms laser eye surgery and refractive surgery are commonly used as if they were interchangeable, this prevents light from forming a clear image on the retina. If visual loss is significant, surgical removal of the lens may be ... Fetch Content
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