Why are titanium glasses so expensive?
Pure titanium can guide the electron wave to produce ions so that the current tends to ionize, and positive and negative ions can reduce the harmful effects of the body's biological current chaos caused by electromagnetic waves. To the human body, it has a great health care role. It avoids fatigue, muscle stiffness, soreness, and other symptoms or problems.
What is a good progressive lens?
No matter how close the objects you see, the lenses are guaranteed to give you a clear view. Whether it's working with a computer, using a smartphone or tablet screen, or simply reading the newspaper, it's all about bringing a comfortable feeling for you. At the same time, the lenses have greater contrast and clarity. The lenses have been tested and approved by the wearer to ensure customer satisfaction, including quick and easy adaptation.
Brick-and-mortar stores have fewer customers.
Brick-and-mortar stores are known to have a significantly smaller customer base, targeting a particular county or even a particular region and population. Mainly aimed at young students.For physical stores, their income range is relatively narrow. Therefore, in order to make more money, every physical store can only make a profit by raising the single sale price. Online stores attract consumer demand from all over the country and the world through the Internet.
There are three processes for resin-changing lenses.
The incorporation method, known as bulk polymerization, is similar to the method of glass lens, that is, one or more photochromic dyes are directly incorporated into the polymer monomer of the substrate for bulk polymerization, and the lens formed after curing will change color. Discoloration dye is completely integrated into the resin lens substrate, so the lens made of color persistence is very good.
The uniformity of discoloration and the depth of color after discoloration are highly related to the thickness of the lens. Because the thickness of the lenses at all levels is different, there will be a color difference between the depth of discoloration and the uniformity, and the uneven phenomenon of high brightness is more obvious.
The film type is known as the coating method. It is the chromatic resin lens by coating or dipping in a layer of chromatic dye on the base of the resin lens. Because the coating covers the surface of the lens, the color uniformity is good. The coating, which is only about 0.05mm thick, does not provide enough molecules to make the lens dark enough, so the color is relatively less dark, and the discoloration lasts slightly longer.
Infiltration, known as the penetration method, is to use the principle of penetration, through the thermal diffusion method to make the color dye permeate the surface of the resin lens sheet material, with diffusion depth up to 0.15~0.20mm. The lens has a constant color change characteristic. There will be no inconsistency between the center and the surrounding color as the luminosity gets darker. The color-changing resin lens made by infiltration type has the benefits of uniform color-changing, small color difference, fast and thorough color-fading, which is the mainstream of color-changing technology at present.
DiscountGlasses
DiscountGlasses.com is an online eyewear retailer that sells glasses, sunglasses, reading glasses, computer glasses, swimming goggles, safety glasses, and more. They focus on making the smartest shopper look great. Affordable, stylish, and high-quality glasses are designed every day. They help the clients step outside of personal style norms. They provide competitive prices and super customer service, and you can switch from one pair of glasses to multiple pairs without spending a lot of money.
Why You Should Wear Blue Light Glasses?
However, many of our work and social life revolve around looking at a screen for multiple hours every day. Too much exposure may damage our eyes. So, you need to consider wearing blue light glasses. Here are several reasons for you to wear blue light glasses.
Less eye strain: looking at a screen all day can make you feel stressed or you may experience eye and muscle strain. So, wearing blue light glasses can help you to reduce eye strain.
Better sleep: spending time on a screen before bed can make you feel alert. In the same way, a walk outside sunlight can also help you feel alert. So, if you are unable to turn off your device an hour or two before bed, using blue light glasses may help you sleep better.
Fewer headaches: blue light can trigger migraines and exacerbate headache pain. Blocking blue light with special glasses may reduce headaches.
Lower risk of eye diseases: the cornea and eye lens are able to block out harmful UV light from reaching the retina. But, they can’t block blue light. If the retina is damaged, the risk of developing macular degeneration will increase, which would lead to blindness. In addition, blue light can penetrate your retina and lead to macular degeneration-like symptoms and increase the risk of developing cataracts. So, wearing blue light glasses can prevent this.
From the above information, can you wear blue light glasses all day or can blue light glasses damage your eyes? You may have got the answer. So, if you need a pair of blue light glasses, try Koalaeye glasses. They come in stylish and at a cheap price.
Why Are My Progressive Lenses Blurry?
So, why are my progressive lenses blurry on sides? It can be caused by a lot of reasons, and we will list some of them.
The strength of progressive lenses is the factor that leads to initial peripheral blurriness. Progressive lenses tend to be blurry on the sides because each lens promotes three fields of vision. In addition, peripheral blurriness or haziness is a sensation that typically develops because more than one lens has been incorporated into one lens. The wearer also might feel as if he or she is moving from side to side.
After learning what may cause progressive lenses blurred, so how can you adapt to the progressive lenses? Therefore, in the following section, we will show you how to get used to progressive lenses.
