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Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia ) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both.
Astigmatism causes difficulties in seeing fine detail. Astigmatism can be often corrected by glasses with a lens that has different radii of curvature in different planes (a cylindrical lens), contact lenses, or refractive surgery. [5] Astigmatism is quite common. Studies have shown that about one in three people suffers from it.
Since most refractions (the measurement that determines the power of a corrective lens) are performed at a vertex distance of 12–14 mm, the power of the correction may need to be modified from the initial prescription so that light reaches the patient's eye with the same effective power that it did through the phoropter or trial frame.
If glasses are not your thing, you can also look at the eclipse using a telescope, camera lens, or binoculars, but they must have the proper filter over the top to avoid causing any eye damage.
Acanthoma fissuratum, also known as granuloma fissuratum is a cutaneous condition characterized by local thickening of the skin in response to pressure caused by an eyeglass frame. [1]: 777 Acanthoma fissuratum is a hard, folded, flesh-colored lesion or plaque with a central groove. It affects the ear and is common in people wearing poorly ...
Plus, existing research supports the use of salt-water gargles as an effective remedy to relieve sore throats, so this “principal should apply to all concentrated salt solutions," Yancey explains.
A study indicated that the prevalence of myopia among urban children in India of aged 5 to 15 increased from 4.44% in 1999 to 21.15% in 2019. Projections suggest that by 2050, this figure could reach 48.14%. [140] Some research suggests the prevalence of myopia in Indian children is less than 15%. [141]
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