Myopia: Definition, Causes, Symptoms, and Treatment

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Myopia

Myopia: Definition, Causes, Symptoms, and Treatment

Myopia: Definition, Causes, Symptoms, and Treatment: Myopia (also called nearsightedness) is the most common cause of poor vision in people under the age of 40. Its prevalence has been increasing alarmingly in recent years.

Research conducted globally has shown, in the year 2000, about 25 percent of the world’s population suffered from myopia, but by the year 2050, it is expected that almost half of the world’s population is going to suffer from myopia.

What Causes of Myopia (Nearsightedness)

Myopia (nearsightedness) occurs when the eyeball (eyeball) becomes too long relative to the eye’s cornea and lens to focus power.

This causes the rays of light to be focused directly in front (before the retina), instead of focusing on a single point on the surface of the retina. Too much curvature of the cornea and/or lens for the length of the eyeball may also cause nearsightedness.

Myopia usually begins in childhood, and you may be at a higher risk of developing myopia if your parents also have myopia. In most cases, nearsightedness stabilizes in early adulthood but sometimes it progresses with age.

Symptoms of Myopia (Nearsightedness)

  • Difficulty reading road signs and seeing distant objects clearly but being able to see well for close-up tasks such as reading and computer use are symptoms of myopia.
  • Myopia (nearsightedness) includes symptoms such as squinting, eye strain, and headache.
  • Feeling tired while driving or playing sports.

Treatment of Myopia (Nearsightedness):

Nearsightedness can be corrected with glasses, contact lenses, or refractive surgery. Depending on the degree of your myopia, you may need to wear your glasses or contact lenses at all times.

Good choices for eyeglass lenses for myopia (nearsightedness) include high index lenses (for thin, light glasses). and lenses with an anti-reflective coating. Also, consider photochromic lenses to protect your eyes from UV and high-energy blue light and reduce the need for a separate pair of prescription sunglasses.

If you are near-sighted, the first number (“Sphere”) on your eyeglass prescription or contact lens prescription will already have a minus sign (-). The higher the number of values, the more near-sighted you are.

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