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  2. Scleral tattooing - Wikipedia

    en.wikipedia.org/wiki/Scleral_tattooing

    Scleral tattooing is the practice of tattooing the sclera, or white part, of the human eye. Rather than being injected into the tissue, the dye is injected between two layers of the eye, then gradually spreads. The process remains uncommon due to professionals' discomfort performing the procedure [ 1] and is illegal in the American states ...

  3. File:Complications of insomnia.svg - Wikipedia

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

    By this method, body diagrams can be derived by pasting organs into one of the "plain" body images shown below. This method requires a graphics editor that can handle transparent images, in order to avoid white squares around the organs when pasting onto the body image. Pictures of organs are found on the project's main page. These were ...

  4. Closed-eye hallucination - Wikipedia

    en.wikipedia.org/wiki/Closed-eye_hallucination

    Some mental control can be exerted over these closed-eye visualizations, but it usually requires a bit of relaxation and concentration to achieve. [1] [2] When properly relaxed, it is possible to cause regions of intense black, bright white or even colors such as yellow, green, or pink to appear in the noise. These regions can span the entire ...

  5. Humorism - Wikipedia

    en.wikipedia.org/wiki/Humorism

    They joke and laugh about their bodies, and they are rose-tinted, slightly red, and have pretty skin. The people who have yellow bile are bitter, short tempered, and daring. They appear greenish and have yellow skin. The people who are composed of black bile are lazy, fearful, and sickly. They have black hair and black eyes.

  6. The red light device that dermatologists told us makes skin ...

    www.aol.com/lifestyle/solawave-red-light-therapy...

    Dr. Dennis Gross DRx SpectraLite Dpl FaceWare Pro. $455. Though a pricier option, it's a foolproof red light device that sits atop the skin to deliver both red- and blue-light therapy across the ...

  7. The dangers of LED face masks you should know about - AOL

    www.aol.com/lifestyle/dangers-led-face-masks...

    Palep herself was quite concerned with the dosage of the light therapy provided by the masks, as not every patient may require the same amount and duration of the treatment. "The potential dangers ...

  8. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    Color blindness or color vision deficiency ( CVD) is the decreased ability to see color or differences in color. [ 2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...

  9. 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.