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  2. This Is The 1 Thing An Eye Doctor Says You Should Never Do ...

    www.aol.com/1-thing-eye-doctor-says-120017349.html

    Listen to the full episode by pressing play: ″ [Sleeping with contact lenses in your eyes] is bad. It’s real bad. Don’t do it,” Redfern told us, adding that this even applies to naps ...

  3. Biological effects of high-energy visible light - Wikipedia

    en.wikipedia.org/wiki/Biological_effects_of_high...

    Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.

  4. Rapid eye movement sleep - Wikipedia

    en.wikipedia.org/wiki/Rapid_eye_movement_sleep

    Rapid eye movement sleep ( REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The REM phase is also known as paradoxical sleep ( PS) and sometimes ...

  5. Wing clipping - Wikipedia

    en.wikipedia.org/wiki/Wing_clipping

    Wing clipping. Wing clipping is the process of trimming a bird's primary wing feathers or remiges so that it is not fully flight-capable, until it moults, sheds the cut feathers and grows new ones. This procedure is usually carried out by avian veterinarians, breeders, or the bird's owners, and primarily on pet birds like parrots.

  6. 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.

  7. Unihemispheric slow-wave sleep - Wikipedia

    en.wikipedia.org/wiki/Unihemispheric_slow-wave_sleep

    In USWS, also known as asymmetric slow-wave sleep, one half of the brain is in deep sleep, a form of non-rapid eye movement sleep and the eye corresponding to this half is closed while the other eye remains open. When examined by electroencephalography (EEG), the characteristic slow-wave sleep tracings are seen from one side while the other ...

  8. File:Ray optics and waveguides.svg - Wikipedia

    en.wikipedia.org/wiki/File:Ray_optics_and...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  9. File:World Trade Center 9-11 Attacks Illustration with Bird's ...

    en.wikipedia.org/wiki/File:World_Trade_Center_9...

    File:World Trade Center 9-11 Attacks Illustration with Bird's-eye Impact Locations.svg. Size of this PNG preview of this SVG file: 555 × 599 pixels. Other resolutions: 222 × 240 pixels | 445 × 480 pixels | 711 × 768 pixels | 949 × 1,024 pixels | 1,897 × 2,048 pixels | 880 × 950 pixels. This is a file from the Wikimedia Commons.