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According to WebMD, "There are doctors who may recommend eye exercise for eyestrain, blurred vision, headaches, increased sensitivity to bright light, tired eyes, or difficulty sustaining attention."
The eye exercises used in vision therapy can generally be divided into two groups: those employed for "strabismic" outcomes and those employed for "non-strabismic" outcomes, to improve eye health. Ophthalmologists and orthoptists do not endorse these exercises as having clinically significant validity for improvements in vision.
The See Clearly Method was an eye-exercise program that was marketed as an alternative to the use of glasses, contact lenses, and eye surgery to improve vision. Sales were halted by legal action in 2006. The method is not supported by basic science, and no research studies were conducted prior to marketing.
The Bates method is an ineffective and potentially dangerous alternative therapy aimed at improving eyesight.Eye-care physician William Horatio Bates (1860–1931) held the erroneous belief that the extraocular muscles caused changes in focus and that "mental strain" caused abnormal action of these muscles; hence he believed that relieving such "strain" would cure defective vision.
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Stereoacuity is limited by the visual acuity of the eyes, and in particular by the visual acuity of the weaker eye. That is, the more a patient's vision of any one of the two eyes is degraded compared to the 20/20 vision standard, the lower are the prospects of improving or re-gaining stereo vision, unless visual acuity itself were improved by ...
The symptoms and signs associated with convergence insufficiency are related to prolonged, visually demanding, near-centered tasks. They may include, but are not limited to, diplopia (double vision), asthenopia (eye strain), transient blurred vision, difficulty sustaining near-visual function, abnormal fatigue, headache, and abnormal postural adaptation, among others.
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