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  2. Diffraction spike - Wikipedia

    en.wikipedia.org/wiki/Diffraction_spike

    Diffraction spikes are lines radiating from bright light sources, causing what is known as the starburst effect [1] or sunstars [2] in photographs and in vision. They are artifacts caused by light diffracting around the support vanes of the secondary mirror in reflecting telescopes , or edges of non-circular camera apertures , and around ...

  3. LASIK - Wikipedia

    en.wikipedia.org/wiki/LASIK

    Some post-LASIK patients see halos and starbursts around bright lights at night. [1] Complications due to LASIK have been classified as those that occur due to preoperative, intraoperative, early postoperative, or late postoperative sources: [54] According to the UK National Health Service, complications occur in fewer than 5% of cases. [51]

  4. Doctors Warn Against Dangerous Beauty Trend That Leaves ...

    www.aol.com/lifestyle/doctors-warn-against...

    The costs of a mesotherapy treatment depend on the desired areas to be treated. For instance, Elite Aesthetics , a clinic based in the UK, offers treatments for £300 (approximately $380).

  5. Photopsia - Wikipedia

    en.wikipedia.org/wiki/Photopsia

    It is light-sensitive and communicates visual messages to the brain. If the retina detaches, it moves and shifts from its normal position. This can cause photopsia, but can also cause permanent vision loss. Medical attention is needed to prevent vision loss. Procedures may include laser treatment, freezing, or surgery.

  6. Light therapy - Wikipedia

    en.wikipedia.org/wiki/Light_therapy

    A 1995 study showed that green light therapy at doses of 350 lux produces melatonin suppression and phase shifts equivalent to 10,000 lux white light therapy, [63] [64] but another study published in May 2010 suggests that the blue light often used for SAD treatment should perhaps be replaced by green or white illumination, because of a ...

  7. Neurologists reveal 15 subtle migraine symptoms — that aren't ...

    www.aol.com/neurologists-reveal-15-subtle...

    For example, the Mayo Clinic says, you might see: Blind spots, which might be outlined with geometric designs. Shimmering stars or spots. Zigzag lines that slowly float across your vision. Flashes ...

  8. Norovirus Is Surging Across The Country. Here Are The ... - AOL

    www.aol.com/norovirus-surging-across-country...

    Basically, there’s a ton of norovirus floating around out there. Norovirus is no joke—it can cause vomiting and diarrhea (often at the same time), making for a miserable experience.

  9. Cyanopsia - Wikipedia

    en.wikipedia.org/wiki/Cyanopsia

    Managing exposure to bright light and consulting a doctor to adjust medications, if necessary, can help reduce the risk. While the causes of cyanopsia, such as cataract surgery and certain medications, are well-documented, gaps in knowledge remain regarding why some individuals develop cyanopsia while others do not under similar circumstances.

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