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  2. Eye strain - Wikipedia

    en.wikipedia.org/wiki/Eye_strain

    The experience of eye strain when reading in dim light has given rise to the common misconception that such an activity causes permanent eye damage. [3] When concentrating on a visually intense task, such as continuously focusing on a book or computer monitor, the ciliary muscles and the extraocular muscles are strained. This causes discomfort ...

  3. Computer vision syndrome - Wikipedia

    en.wikipedia.org/wiki/Computer_vision_syndrome

    This, unaware to them, causes the eye strain to build up over a period of time, when if they had obtained seven to eight hours of uninterrupted sleep, their eye muscles would have recovered during the sleep and the strain would not have built up. [citation needed] Computer workers are often advised to take breaks and look at distant objects. [4]

  4. Why Your Head and Eyes Hurt After Viewing the Eclipse - AOL

    www.aol.com/lifestyle/why-head-eyes-hurt-viewing...

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  5. Anisometropia - Wikipedia

    en.wikipedia.org/wiki/Anisometropia

    [2] [3] Patients may have up to 3 diopters of anisometropia before the condition becomes clinically significant due to headache, eye strain, double vision or photophobia. [ 4 ] In certain types of anisometropia, the visual cortex of the brain cannot process images from both eyes simultaneously ( binocular summation ), but will instead suppress ...

  6. Strabismus - Wikipedia

    en.wikipedia.org/wiki/Strabismus

    Strabismus is an eye disorder in which the eyes do not properly align with each other when looking at an object. [2] The eye that is pointed at an object can alternate. [3] The condition may be present occasionally or constantly. [3] If present during a large part of childhood, it may result in amblyopia, or lazy eyes, and loss of depth ...

  7. Spasm of accommodation - Wikipedia

    en.wikipedia.org/wiki/Spasm_of_accommodation

    A spasm of accommodation (also known as a ciliary spasm, an accommodation, or accommodative spasm) is a condition in which the ciliary muscle of the eye remains in a constant state of contraction. Normal accommodation allows the eye to "accommodate" for near-vision. However, in a state of perpetual contraction, the ciliary muscle cannot relax ...

  8. Bates method - Wikipedia

    en.wikipedia.org/wiki/Bates_method

    The Bates method is an ineffective and potentially dangerous alternative therapy aimed at improving eyesight.Eye-care physician William Horatio Bates (1860–1931) held the erroneous belief that the extraocular muscles caused changes in focus and that "mental strain" caused abnormal action of these muscles; hence he believed that relieving such "strain" would cure defective vision.

  9. Myopia - Wikipedia

    en.wikipedia.org/wiki/Myopia

    The idea that myopia was caused by the eye strain involved in reading or doing other work close to the eyes was a consistent theme for several centuries. [101] In Taiwan, faced with a staggering rise in the number of young military recruits needing glasses, the schools were told to give students' eyes a 10-minute break after every half-hour of ...