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Macular degeneration, also known as age-related macular degeneration (AMD or ARMD), is a medical condition which may result in blurred or no vision in the center of the visual field. [1] Early on there are often no symptoms. [1] Over time, however, some people experience a gradual worsening of vision that may affect one or both eyes. [1] While it does not result in complete blindness, loss of ...
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] Other symptoms may include headaches and eye strain. [1][9] Severe myopia is associated with an increased risk of macular ...
Vitamin A is a fat-soluble vitamin that is an essential nutrient. The term "vitamin A" encompasses a group of chemically related organic compounds that includes retinol, retinyl esters, and several provitamin (precursor) carotenoids, most notably β-carotene (beta - carotene). [3][4][5][6] Vitamin A has multiple functions: essential in embryo development for growth, maintaining the immune ...
Having an idea of the average benefit at different ages can help retirees decide when it makes sense to claim benefits.
Saudi Arabia plans to scrap light-touch oversight of its nuclear facilities by the U.N. atomic watchdog and switch to regular safeguards by the end of this year, the kingdom said on Monday, a step ...
The Senate on Tuesday failed for a second time to advance an in vitro fertilization (IVF) protection bill by a vote of 51-44. The legislation was largely dismissed by Republicans as a political ...
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 ...
Scarlet Witch then falls in love with recent Avenger recruit the Vision. While he is an android or "synthezoid" (built from a copy of the original Human Torch, a synthetically created man), Vision's personality programming is partly based on the brainwaves of Wonder Man, allowing him to develop his own mind and emotions.