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2. Farsightedness - Wikipedia

   en.wikipedia.org/wiki/Farsightedness

   Management can occur with eyeglasses, contact lenses, or refractive corneal surgeries. Glasses are easiest while contact lenses can provide a wider field of vision. Surgery works by changing the shape of the cornea. Far-sightedness primarily affects young children, with rates of 8% at 6 years old and 1% at 15 years old.

3. Anisometropia - Wikipedia

   en.wikipedia.org/wiki/Anisometropia

   Amblyopia. Anisometropia is a condition in which a person's eyes have substantially differing refractive power. [1] Generally, a difference in power of one diopter (1D) is the threshold for diagnosis of the condition . [2] [3] Patients may have up to 3D of anisometropia before the condition becomes clinically significant due to headache, eye ...

4. Human eye - Wikipedia

   en.wikipedia.org/wiki/Human_eye

   The human eye is an organ of the sensory nervous system that reacts to visible light and allows the use of visual information for various purposes including seeing things, keeping balance, and maintaining circadian rhythm . Arizona Eye Model. "A" is accommodation in diopters. The eye can be considered as a living optical device.

5. Diplopia - Wikipedia

   en.wikipedia.org/wiki/Diplopia

   Specialty. Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [1] Also called double vision, it is a loss of visual focus under regular conditions, and is often voluntary.

6. Myodisc - Wikipedia

   en.wikipedia.org/wiki/Myodisc

   Myodisc. A myodisc or myopic disk is a corrective lens with a steep concave curvature that is fitted on the posterior surface of a carrier lens, or a high power single-vision lens specially ordered with slab-off the edge, creating a central prescription disc. These are used for correction of extremely high myopia often seen in low vision ...

7. Acanthamoeba keratitis - Wikipedia

   en.wikipedia.org/wiki/Acanthamoeba_keratitis

   1.2–3 million people per year; 1 per 10,000 contact wearers [1] Acanthamoeba keratitis ( AK) is a rare disease in which amoebae of the genus Acanthamoeba invade the clear portion of the front ( cornea) of the eye. It affects roughly 100 people in the United States each year. [2] Acanthamoeba are protozoa found nearly ubiquitously in soil and ...