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  2. Adaptation (eye) - Wikipedia

    en.wikipedia.org/wiki/Adaptation_(eye)

    The dark adaptation function was measured prior to supplementation, 1 day post-treatment, and 75 days post-treatment. It was observed that after merely one day of vitamin A supplementation the recovery kinetics of dark adaptation were significantly accelerated after photoreceptor bleaching. [ 39 ]

  3. Averted vision - Wikipedia

    en.wikipedia.org/wiki/Averted_vision

    Averted vision works because there are virtually no rods (cells which detect dim light in black and white) in the fovea: a small area in the center of the eye. The fovea contains primarily cone cells, which serve as bright light and color detectors and are not as useful during the night. This situation results in a decrease in visual ...

  4. Visual snow syndrome - Wikipedia

    en.wikipedia.org/wiki/Visual_snow_syndrome

    It is difficult to resolve visual snow with treatment, but it is possible to reduce symptoms and improve quality of life through treatment, both of the syndrome and its comorbidities. [4] In some studies, lamotrigine as a treatment for visual snow syndrome only showed efficacy in 20% of patients, and in one study, patients using lamotrigine ...

  5. Photophobia - Wikipedia

    en.wikipedia.org/wiki/Photophobia

    Photophobia is a medical symptom of abnormal intolerance to visual perception of light. [1] As a medical symptom, photophobia is not a morbid fear or phobia, but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical sensitivity of the eyes, [2] though the term is sometimes additionally applied to abnormal or irrational fear of light, such as ...

  6. 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.

  7. What does a faint line on a rapid COVID-19 test mean? - AOL

    www.aol.com/faint-line-covid-19-test-225851470.html

    Looking at the faint line, I wondered if I was just tricking myself or if I was actually positive for COVID-19. When I took another test the next day, however, the line came back much darker than ...

  8. Low-level laser therapy - Wikipedia

    en.wikipedia.org/wiki/Low-level_laser_therapy

    [3] [4] However LLLT has been marketed and researched under a number of other terms, including red light therapy, [39] low-power laser therapy (LPLT), soft laser therapy, low-intensity laser therapy, low-energy laser therapy, cold laser therapy, bio-stimulation laser therapy, photo-biotherapy, therapeutic laser, and monochromatic infrared light ...

  9. Lightheadedness - Wikipedia

    en.wikipedia.org/wiki/Lightheadedness

    Treatment may include drinking plenty of water or other fluids (unless the lightheadedness is the result of water intoxication in which case drinking water is quite dangerous). If a patient is unable to keep fluids down from nausea or vomiting, they may need intravenous fluids such as Ringer's lactate solution .