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2. Sunglasses - Wikipedia

   en.wikipedia.org/wiki/Sunglasses

   It is not possible to "see" the protection that sunglasses offer. Dark lenses do not automatically filter out more harmful UV radiation and blue light than light lenses. Inadequate dark lenses are even more harmful than inadequate light lenses (or wearing no sunglasses at all) because they provoke the pupil to open wider.

3. Cyanopsia - Wikipedia

   en.wikipedia.org/wiki/Cyanopsia

   Cyanopsia is a rare visual phenomenon characterized by a blue tint to vision. Most commonly associated with cataract surgery and certain medications, such as sildenafil , cyanopsia is typically a temporary side effect rather than a standalone disease.

4. 15 Chic Dark Sunglasses That Actually Block Out the Sun - AOL

   www.aol.com/entertainment/15-chic-dark...

   How many times have you bought a pair of sunglasses that you loved the look of, but when you looked around outside when it counted, they did little to dim the sun’s light? We’ve all been there ...

5. The 20 Best Sunglasses Brands to Wear Every Season This Year

   www.aol.com/20-best-sunglasses-brands-wear...

   Linda Farrow Alexis Sunglasses. A personal favorite to wear daily, Linda Farrow sunglasses are sturdy and sleek. The London-based brand, founded in the 1970s, creates a variety of styles from bold ...

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. Biological effects of high-energy visible light - Wikipedia

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

   Lenses that filter blue light have been on the market for a long time in the form of brown-, orange-, and yellow-tinted sunglasses. [34] These tinted lenses were popular for the belief that they enhanced contrast and depth perception, but after early research showing the health risks of blue light exposure, [35] [36] became more popular for the ...