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Cataract surgery is the most common application of lens removal surgery, and is usually associated with lens replacement. It is used to remove the natural lens of the eye when it has developed a cataract, a cloudy area in the lens that causes visual impairment. [4][10] Cataracts usually develop slowly and can affect one or both eyes. [4]
Myopia. Myopia, also known as near-sightedness and short-sightedness, [5] is an eye disease [6][7][8] where light from distant objects focuses in front of, instead of on, the retina. [1][2][7] As a result, distant objects appear blurry while close objects appear normal. [1]
The human eye is a sensory organ in the visual system that reacts to visible light allowing eyesight. Other functions include maintaining the circadian rhythm, and keeping balance. Arizona Eye Model. "A" is accommodation in diopters. The eye can be considered as a living optical device. It is approximately spherical in shape, with its outer ...
It was a wooden mock-up, with a mirror eye-level finder. This first prototype used a five-facet roof optic prism giving a left to right inverted image. For vertical pictures, the image was upside down, and that was a big drawback. This was corrected with a Goulier prism before the 1948 Milano Fair. [101] 1948
Ludwig van Beethoven debuted his Ninth Symphony, widely regarded as one of the masterpieces of Western classical music, in 1824 as he was losing his hearing. To celebrate 200 years since its debut ...
Chicago hit 99 degrees on Tuesday, breaking the city's daily record of 97 degrees. On Wednesday, the heat moved east. Record highs were shattered in Washington, D,C., which reached 101 degrees ...
Especially when accompanied by shortness of breath, these symptoms can indicate cardiac amyloidosis, Zoghbi says. “It’s a problem of protein misfolding,” he explains. “The protein, which ...
In 1816, Schopenhauer went on to develop his own theory in On Vision and Colours based on the observations supplied in Goethe's book. After being translated into English by Charles Eastlake in 1840, his theory became widely adopted by the art world, most notably J. M. W. Turner. [79]
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