COTIA Transition Photochromic Reading Glasses for Men Outdoor Square Sports Presbyopia Reader (black red, 1.75, multiplier_x)

Description

• FULL MAGNIFICATION LENSES,The entire lens features the magnification of your choice for maximum clarity
• The photochromic lenses are based on the intensity of sunlight and ultraviolet lights, darkening the light grey lens. What's more, these sunglasses can protect eyes without interfering with your perception of colour. Plus its classic retro design, always satisfy your daily dressing demand
• The Photochromic lenses only change color under ultraviolets, and may not change very obviously under weak UV situations, people will have different visual senses
• These Glasses - Ideal for outdoor sports and activities such as parties, photo booths, travel, shopping, daily use, and other outdoor activities. It also a great gift idea for your families and friends
• You will get - 1* glasses, 1* glasses case, 1* glasses cloth and friendly customer service. If you have any questions about this glasses, please feel free to contact us. We will do our best to solve it for you

Description

1. What are photochromic lenses?

Photochromic lenses are also referred to as light-sensitive lenses". Glass lenses are adding silver halide, but now is the mainstream of photochromic resin lenses, adding of spiro and other chemicals in the acrylic resin lens, so that the original colorless and transparent lenses.
In bright light, will become colored lenses, to do the protection, so is suitable for indoor and outdoor use.
Photochromic lens optical glass containing silver halide microcrystals, phototropy reversible reaction according to the principle, in the sunlight and UV irradiation variable dark, completely absorb ultraviolet and visible light absorption of neutral; back to the dark, can restore the colorless transparent. Photochromic lenses are mainly used in open-air fields, snow fields and indoor light sources, so as to prevent sunlight and ultraviolet light from damaging the eyes.
Reading glasses, also known as reading glasses, are a type of optical products used for people with presbyopia. They are convex lenses. Reading glasses are mainly to meet the needs of people with presbyopia.

2. Test discoloration?
It is recommended to test at noon, noon sun UV strong, discoloration can achieve the best results, more test several times, the effect is better.
Warm tips
Please correctly understand photochromic glasses, he color depth does not equal sunglasses.

Shipping and Returns

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