myopia

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презентация powerpoint tashkent medical academy department of foreign languages independent work topic: myopia passed: rayimqulov faxrinur accepted: muhabbat myopia, also known as near-sightedness and short-sightedness, is an eye disorder where light focuses in front of, instead of on, the retina.this causes distant objects to appear blurry while close objects appear normal. other symptoms may include headaches and eye strain. severe near-sightedness is associated with an increased risk of retinal detachment, cataracts, and glaucoma.the underlying mechanism involves the length of the eyeball growing too long or less commonly the lens being too strong. it is a type of refractive error. diagnosis is by eye examination. tentative evidence indicates that the risk of near-sightedness can be decreased by having young children spend more time outside.this may be related to natural light exposure.near-sightedness can be corrected with eyeglasses, contact lenses, or a refractive surgery. eyeglasses are the easiest and safest method of correction.contact …
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extent of the myopia is great enough, even standard reading distances can be affected. upon routine examination of the eyes, the vast majority of myopic eyes appear structurally identical to nonmyopic eyes.onset is often in school children, with worsening between the ages of 8 and 15. causes the underlying cause is believed to be a combination of genetic and environmental factors.risk factors include doing work that involves focusing on close objects, greater time spent indoors, urbanization, and a family history of the condition.it is also associated with a high socioeconomic class and higher level of education. a 2012 review could not find strong evidence for any single cause, although many theories have been discredited. identical twins are more likely to be affected than non identical twins which indicates at least some genetic factors are involved. myopia has been increasing rapidly throughout the developed world, suggesting environmental factors are involved. a …
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elopment. the carriers of the high-risk genes have a tenfold increased risk of myopia.aberrant genetic recombination and gene splicing in the opnlw1 and opnmw1 genes that code for two retinal cone photopigment proteins can produce high myopia by interfering with refractive development of the eye. diagnosis a diagnosis of myopia is typically made by an eye care professional, usually an optometrist or ophthalmologist. during a refraction, an autorefractor or retinoscope is used to give an initial objective assessment of the refractive status of each eye, then a phoropter is used to subjectively refine the patient's eyeglass prescription. other types of refractive error are hyperopia, astigmatism, and presbyopia.[1] image1.png image2.png image3.jpeg image4.jpeg /docprops/thumbnail.jpeg
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презентация powerpoint tashkent medical academy department of foreign languages independent work topic: myopia passed: rayimqulov faxrinur accepted: muhabbat myopia, also known as near-sightedness and short-sightedness, is an eye disorder where light focuses in front of, instead of on, the retina.this causes distant objects to appear blurry while close objects appear normal. other symptoms may include headaches and eye strain. severe near-sightedness is associated with an increased risk of retinal detachment, cataracts, and glaucoma.the underlying mechanism involves the length of the eyeball growing too long or less commonly the lens being too strong. it is a type of refractive error. diagnosis is by eye examination. tentative evidence indicates that the risk of near-sightedness can be dec...

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