enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. These Stylish, Doctor-Approved Reading Glasses Can Help ... - AOL

   www.aol.com/best-doctor-approved-reading-glasses...

   In fact, as many as 34.5 million Americans wear over-the-counter reading glasses, according to the Vision Council. Luckily, reading glasses are easy to get practically anywhere—and they come in ...

3. Color blind glasses - Wikipedia

   en.wikipedia.org/wiki/Color_blind_glasses

   Glasses with a notch filter (e.g. EnChroma glasses) filter a narrow band of light around 590 nm that excites both the L- and M-cones (yellow-green wavelengths). [12] They are often combined with an additional stopband in the short wavelength (blue) region to minimize the tint on the lenses and approximate a neutral-density filter. They improve ...

4. 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 ...

5. Photochromic lens - Wikipedia

   en.wikipedia.org/wiki/Photochromic_lens

   In the absence of activating light, the lenses return to their clear state. Photochromic lenses may be made of polycarbonate, or another plastic. Glass lenses use visible light to darken. They are principally used in glasses that are dark in bright sunlight, but clear, or more rarely, lightly tinted in low ambient light conditions. They darken ...

6. Glasses - Wikipedia

   en.wikipedia.org/wiki/Glasses

   Typical sunglasses lenses are tinted for protection against bright light or polarized to remove glare; photochromic glasses are clear or lightly tinted in dark or indoor conditions, but turn into sunglasses when they come into contact with ultraviolet light. Most over-the-counter sunglasses do not have corrective power in the lenses; however ...

7. Photosensitivity in humans - Wikipedia

   en.wikipedia.org/wiki/Photosensitivity_in_humans

   Rapid flickers in intensity of light may trigger or aggravate photosensitive epilepsy, epileptic seizure, or migraine headaches. [4] Conditions that may include sensitivity to light include vertigo and chronic fatigue syndrome. Controlled application of artificial light can be used in a program of light therapy to treat some disorders.