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When refractive errors in children are not treated, the child may be at risk of developing ambylopia, where vision may remain permanently blurry. Because young children typically do not complain of blurry vision, the American Academy of Pediatrics recommends that children have yearly vision screening starting at three years old so that unknown refractive errors or other ophthalmic conditions ...
v. t. e. A Conflict of Visions is a book by Thomas Sowell. It was originally published in 1987; a revised edition appeared in 2007. [1] Sowell's opening chapter attempts to answer the question of why the same people tend to be political adversaries in issue after issue, when the issues vary enormously in subject matter and sometimes hardly seem ...
The inverse problem in optics (or the inverse optics problem [1]) refers to the fundamentally ambiguous mapping between sources of retinal stimulation and the retinal images that are caused by those sources. [2] For example, the size of an object, the orientation of the object, and its distance from the observer are conflated in the retinal image.
Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result. The others are experimental, meaning that there is a difficulty in creating an experiment to test a proposed theory or investigate a phenomenon in greater detail.
Natural sciences, engineering and medicine. Unsolved problems in astronomy. Unsolved problems in biology. Unsolved problems in chemistry. Unsolved problems in geoscience. Unsolved problems in medicine. Unsolved problems in neuroscience. Unsolved problems in physics.
Researchers at Northwestern Medicine and Brigham and Women’s Hospital say they’ve discovered a root cause of lupus, a disease that affects hundreds of thousands of people in the U.S ...
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.
The International Boxing Association raised new questions while struggling to answer others Monday at a shambolic news conference about the opaque eligibility tests that led the Olympics-banned ...