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Product Description
Why you should have UV400 sunglasses!
UV rays damage the retina
The three types of uv waves emitted by the sun are UVA, UVB and UVC, the most dangerous of which is absorbed by the atmosphere.
Exposure to the sun without any protection from the sun can damage not only your skin, but your eyes as well.
If unprotected eyes are exposed to the sun, a long and intensive irradiation can lead to inflammations of the conjunctiva and cornea.
In the worst case, the visual organ may be damaged in the long term and the lens may become cloudy (cataract).
UV 400 meaning
UV 400 is the category which blocks all light rays with wavelengths up to 400 nanometers. This covers all of UVA and UVB rays.
All sunglasses with UV400 will protect your eyes and filter out harmful rays. Don't think it's safe to be overcast or in the shade, because ultraviolet rays can penetrate clouds even if the sun is hiding behind them.
All of our PARZIN sunglasses have the function of UV400. We take UV400 as the basis of our fashion sunglasses to protect every fashionista who pursues fashion.
What is polarizing lens?
Advantages of polarized lenses
- Improves visual comfort
- Improves contrast and visual clarity
- Reduces eye strain
- Clearer vision, especially in bright light
- Reduces reflections and eliminates glare
Glare - resistant and shatter-resistant lenses protecting
Polarized sunglasses are used to reduce glare from smooth surfaces such as water, snow, or glass. Glare distorts the true color of objects and makes them harder to distinguish.
Sunlight can be absorbed or reflected in several different directions. Sunlight that is bouncing off horizontal surfaces such as water, land, or the hood of a car is usually reflected back in a similar horizontal direction.
This reflection produces an agitating source of glare that cannot only create visual discomfort but can also cause a potentially blinding glare. Glare has the potential to create a very dangerous situation, especially while driving.
Polarized lenses contain a laminated filter ( multiple coatings,have good flexibility) that allows only vertically oriented light to pass through. This blocks the horizontally oriented light so that glare is almost eliminated.
(Do not intentionally damage the lens with heavy objects)
Disadvantages of polarized lenses
Polarized lenses aren't good for ...
- looking at LCD screens
- low-light situations and driving at night
- people whose sight may be sensitive to how the lenses change lighting
Whether the reason is psychological or neurological, there are those who say that the lenses make them feel dizzy or disoriented, while others insist that they create an artificial 3-D effect.
For this subset of individuals, it is possible that the photoreceptor cells at the back of their eyes pick up the vertical light signals differently than the rest of us. Under these circumstances, tinted lenses may be the best option.
There are also occupations that require a worker to be able to read certain digital numbers on a liquid crystal display. Polarized lens sometimes can interfere with the visibility of the numbers and should be avoided.
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Big Round Sunglasses Women Polarized UV Protection PZ6216
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Reviews with images
sturdy, large frames large lens great for my big, wide face
--I like these big sunglasses. I have them in purple. I wouldn't really notice them being purple. The frame that you see it nearly black, with the only obviously purple part being the backside of the frames which no one will see. The lens are gradient dark like many sunglasses are. A greyish-blackish-purplishlens--They fit fine on my big head and wide face. They do a good job of covering my eyes and not look too big.--They don't make me nauseous/dizzy (some sunglasses do that to me, I think it has to do with the shape of the lens?).--They hold onto my ear well. I can bend forward and they don't fall off.--They feel sturdy and durable. Time will tell.-- I can wear them driving or just out and about outside, and everything without issue. I notice that they have a gradient lens. So depending on how you look through them, the colors will be brighter or darker. Darkest being along the top, and brightest along the bottom. It is about even looking straight ahead. For the most part, everything is has a gray cast. Grass is more gray green than yellow green, for example.--Comes with a soft shell zippered hard case with lens cloth.--I noticed though, that when I try to look at my smartphone with these on, there is a prism effect. It is very odd. I suspect it is the polarizing lens filters combined with the phones polarizing filters. I would not be able to look at my phone for long with these on. However, if the screen is tilted a little, then this aligns the filters and the dark screen and/or prism effect should dissipate.--of the color choices available it appears that black, red, and purple all have a dark lens, while the brown pair has an amber looking lens. I imagine that alters how things look. Just keep that in mind when making a selection, or seek out reviews based on the color you are considering.I like them for me. For some, they may be simply too large for your taste. Otherwise, I think they are a decent pair of sunglasses that I will likely be wearing daily now that the sun is actually out in New York.Take care, be well :)
