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  2. Computer vision syndrome - Wikipedia

    en.wikipedia.org/wiki/Computer_vision_syndrome

    Computer vision syndrome. Computer vision syndrome ( CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.

  3. 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 ...

  4. Diabetic retinopathy - Wikipedia

    en.wikipedia.org/wiki/Diabetic_retinopathy

    Diabetic retinopathy. Often asymptomatic, but can cause spots in the eye and vision loss. Diabetic retinopathy (also known as diabetic eye disease ), is a medical condition in which damage occurs to the retina due to diabetes. It is a leading cause of blindness in developed countries. Diabetic retinopathy affects up to 80 percent of those who ...

  5. Optics and vision - Wikipedia

    en.wikipedia.org/wiki/Optics_and_vision

    Optics and vision. Vision of humans and other organisms depends on several organs such as the lens of the eye, and any vision correcting devices, which use optics to focus the image. The eyes of many animals contains a lens that focuses the light of its surroundings onto the retina of the eye. This lens is essential to producing clear images ...

  6. List of South African slang words - Wikipedia

    en.wikipedia.org/wiki/List_of_South_African...

    Can also mean "crazy" in a very strong sense, as in "Are you befok?" – derogatory. Can also mean "to have sex with". befoetered/bedonnered/bemoerd – lit. "extremely angry" similar to "diedonnerend", etc. Usually used to refer to a person who is often in a very bad mood.

  7. Optical illusion - Wikipedia

    en.wikipedia.org/wiki/Optical_illusion

    Optical illusion is also used in film by the technique of forced perspective . Op art is a style of art that uses optical illusions to create an impression of movement, or hidden images and patterns. Trompe-l'œil uses realistic imagery to create the optical illusion that depicted objects exist in three dimensions.

  8. Eccentricity effect - Wikipedia

    en.wikipedia.org/wiki/Eccentricity_effect

    Eccentricity effect. The eccentricity effect is a visual phenomenon that affects visual search. As retinal eccentricity increases (i.e. the light of the image enters the eye at a larger angle and approaches peripheral vision), the observer is slower and less accurate to detect an item they are searching for. [ 1]

  9. Infrared vision - Wikipedia

    en.wikipedia.org/wiki/Infrared_vision

    Infrared vision is the capability of biological or artificial systems to detect infrared radiation. The terms thermal vision and thermal imaging [ 1][ 2] are also commonly used in this context since infrared emissions from a body are directly related to their temperature: hotter objects emit more energy in the infrared spectrum than colder ones ...