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  2. Kids are becoming nearsighted by screens. Annual school eye ...

    www.aol.com/kids-becoming-nearsighted-screens...

    Researchers state that "in recent years, the prevalence and severity of myopia have been on the rise, and it is estimated that by 2050 there will be 4.76 billion people with myopia and 0.94 ...

  3. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    Myopia can be corrected with a concave lens, which causes the divergence of light rays before they reach the cornea. [ citation needed ] Hyperopia or Farsightedness : When the refractive power is too weak for the length of the eyeball, one has hyperopia or farsightedness.

  4. Myopia - Wikipedia

    en.wikipedia.org/wiki/Myopia

    Tentative evidence indicates that the risk of myopia can be decreased by having young children spend more time outside. [13] [14] This decrease in risk may be related to natural light exposure. [15] Myopia can be corrected with eyeglasses, contact lenses, or by refractive surgery. [1] [16] Eyeglasses are the simplest and safest method of ...

  5. Aniseikonia - Wikipedia

    en.wikipedia.org/wiki/Aniseikonia

    Aniseikonia can occur naturally or be induced by the correction of a refractive error, usually anisometropia (having significantly different refractive errors between each eye) or antimetropia (being myopic (nearsighted) in one eye and hyperopic (farsighted) in the other.)

  6. Near point - Wikipedia

    en.wikipedia.org/wiki/Near_point

    In visual perception, the near point is the closest point at which an object can be placed and still form a focused image on the retina, within the eye's accommodation range. The other limit to the eye's accommodation range is the far point. A normal eye is considered to have a near point at about 11 cm (4.3 in) for a thirty year old. [1]

  7. Radial keratotomy - Wikipedia

    en.wikipedia.org/wiki/Radial_keratotomy

    Radial keratotomy (RK) is a refractive surgical procedure to correct myopia (nearsightedness). It was developed in 1974 by Svyatoslav Fyodorov, a Russian ophthalmologist. It has been largely supplanted by newer, more accurate operations, such as photorefractive keratectomy, LASIK, Epi-LASIK and the phakic intraocular lens. [1]