Simple Definition for Myopia

The term myopia is of Greek origin koine: μυωπία myōpia (or μυωπίασις myōpiasis) “myopia”, from the ancient Greek μύωψ myōps “myopic (man), (man) with closed eyes”, from μύειν myein “to close the eyes” and ὤψ ōps “to look, look, see” (GEN ὠπός ōpos). [12] [13] [14] [15] [16] The opposite of myopia in English is hyperopia (hyperopia). People, and especially children, who spend more time exercising and playing outdoors have lower rates of myopia,[36][35][37][38][39] suggesting that the increased size and complexity of visual stimuli that occur during these types of activities decrease myopic progression. There is preliminary evidence that the protective effect of outdoor activities on the development of myopia is due, at least in part, to the effect of prolonged exposure to daylight on the production and release of retinal dopamine. [23] [40] [41] [42] People with myopia have several options available to them to regain clear vision. These include: children. Your pediatrician will check your child`s eyes every time the child visits. If possible, an initial eye exam should be done before the age of 1 year. If your child doesn`t have obvious eye problems, schedule a repeat eye exam before kindergarten. Since myopia is present in families, it`s even more important to test your eyes early if your child has family members with vision problems. If you or your pediatrician notice vision problems, your child may be referred to an optometrist or pediatric ophthalmologist.

The National Institutes of Health says there is no known way to prevent myopia, and using glasses or contact lenses has no effect on progression unless the glasses or contact lenses are too strong on a prescription. [85] There is no universally accepted method for preventing myopia and the proposed methods require additional studies to determine their effectiveness. [54] Optical correction with glasses or contact lenses is the most common treatment; Other approaches include orthokeratology and refractive surgery. [54]: 21 to 26 drugs (mainly atropine) and vision therapy may be effective in treating various forms of pseudomyopia. [ref. needed] In typical vision, an image is sharply focused on the retina. In myopia, the focal point is in front of the retina, making distant objects blurry. Children at high risk of progressive myopia (family history, early age of onset, and prolonged periods near work) may benefit from treatment options that have been shown to reduce the progression of myopia.

These treatments include the prescription of bifocal glasses or contact lenses, orthokeratology, eye drops or a combination of these. Because people with high myopia have a higher risk of developing cataracts, glaucoma, and myopic macular degeneration, managing myopia can help maintain eye health. Most cases of myopia are mild and easy to control with glasses, contact lenses or refractive surgery. However, in rare cases, more serious disorders develop. Ezra wonders why the GOP would adopt what he considers a “myopia ratio.” High myopia and low myopia. Mild myopia (usually less than 3 dioptric myopia) is also known as low myopia. Moderate myopia or myopia is 3 to 6 diopters of myopia. Severe myopia (more than 6 dioptric myopia) is also known as high myopia. Nearsighted children tend to become more myopic as they get older, but their glasses formula usually stabilizes at age 20.

Myopia is prevalent in the United States, with research suggesting that this condition has increased significantly in recent decades. In 1971-1972, the National Health and Nutrition Survey provided the first nationally representative estimates of myopia prevalence in the United States, finding that the prevalence among people aged 12 to 54 was 25%. Using the same method, it was estimated in 1999-2004 that the prevalence of myopia had increased to 42%. [119] Your child`s pediatrician or other health care provider will perform relatively simple tests to check your child`s eye health at birth between 6 and 12 months and between 12 and 36 months. If there are any problems, you may be referred to a doctor who specializes in eye health and care (ophthalmologist). Myopia occurs when the eyeball is too long or the cornea (the clear anterior cover of the eye) is too curved. As a result, light entering the eye does not focus properly and distant objects appear blurry. Myopia affects nearly 30% of the American population. Although the exact cause of myopia is unknown, there is significant evidence that many people inherit myopia, or at least the tendency to develop myopia. If one or both parents are nearsighted, their children are more likely to be nearsighted. Even though the tendency to develop myopia may be hereditary, its actual development can be influenced by how a person uses their eyes. People who spend a lot of time reading, working on the computer, playing video games, or other intense visual work are more likely to develop myopia.

In fact, time spent in front of a high screen on smart devices (e.g., looking at a smartphone) is associated with a 30% higher risk of myopia, and combined with excessive computer use, this risk has increased to about 80%. A number of alternative therapies have been claimed to improve myopia, including vision therapy, “behavioral optometry,” various eye exercises and relaxation techniques, and the Bates method. [100] Scientific reviews have concluded that there is “no clear scientific evidence” that eye exercises are effective in treating myopia[101] and as such, “they cannot be approved.” [102] People with myopia (also called myopia) have difficulty seeing distant objects, but can clearly see nearby objects. For example, a nearsighted person may not be able to recognize road signs until they are only a few feet away. The examination revealed a hyperopia of 1.5 for the right eye and 3.5 D. for left myopia; Complete visual acuity on both sides. The prevalence of myopia has been reported at 70-90% in some Asian countries, 30-40% in Europe and the United States, and 10-20% in Africa. [105] Myopia is about twice as common in Jews as in people of non-Jewish ethnicity.

[107] Myopia is less common among Africans and the associated diaspora. [104] Among Americans aged 12 to 54, myopia was found to affect African Americans less than Caucasians. [108] In studies, lenses reduced myopia progression by 59% over a three-year period. One hypothesis is that a lack of normal visual stimuli causes incorrect development of the eyeball. According to this hypothesis, “normal” refers to the environmental stimuli in which the eyeball has evolved. [35] Modern people who spend most of their time indoors, in dimly lit or fluorescent buildings, may be at risk for myopia. [35] Orthokeratology, or simply Ortho-K, is a temporary corneal reshaping process using rigid gas permeable (RGP) contact lenses. [93] Wearing specially designed contact lenses at night will temporarily reshape the cornea, allowing patients to see clearly during the day without lenses. Orthokeratology can correct myopia down to -6D.

[94] Several studies have shown that Ortho-K can also reduce the progression of myopia. [95] [96] Risk factors for the use of Ortho-K lenses are microbial keratitis[95], corneal edema[97], etc. Other complications of contact lenses such as corneal aberration, photophobia, pain, irritation, redness, etc. are usually temporary conditions that can be eliminated by proper use of the lenses. [97] Myopia occurs when nearby objects appear clear, distant objects are blurred. For example, you can read a map clearly, but you have trouble seeing well enough to drive a car. Some additional symptoms of myopia that you should watch out for in your children include: Glasses or contact lenses can correct myopia in children and adults. Only for adults (with rare exceptions for children), there are several types of refractive surgeries that can also correct myopia. In Brazil, a 2005 study estimated that 6% of Brazilians aged 12 to 59 had -1.00 or more myopia diopters, compared to 3% of the indigenous population of northwestern Brazil. [123] Another found that nearly 1 in 8 students (13%) in the city of Natal were nearsighted. [124] But not all political actions motivated by moral myopia are bad.

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