Choose cost-effective lenses.
People who have high degrees choose the lens with a high refractive index like 1.60. So that the child's nose will not be compressed, which is the concern of most parents. Children grow faster, and the glasses replacement cycle is short. Adults should choose better quality lenses when choosing lenses, because a pair of glasses can be used for years, even in the situation when the frames are badly distorted and the lenses turn yellow. Zeiss A series lenses are cost-effective, suitable for people who are short of money and want quality. Nikon lens quality is very good, the film, wear, and sharpness are excellent. The disadvantage is that it is expensive, and the price gradient is quite large. The price scope is a bit wide, with two different refractive indexes.
Eyeglass Holder- Cat
It has a universal design for reading glasses for men, women, or children. It's easy to find your glasses in the room. The decorative bracket makes your glasses convenient. You can enjoy a lovely desk or bedside table spectacle frame specially designed to accommodate your reading glasses. The frame has a special slot in the nose that fits perfectly on the arm of your glasses. With this cute and convenient stand, you won't lose or misplace your readers -- it's easy to find on cluttered desks!
Allen OTG Safety & Shooting Glasses
Chemistry LABS and carpentry aren't the only applications that need safety goggles on top of glasses.These Allen OTG glasses work better on indoor shooting ranges. You can use these comfortable safety glasses to better focus your front view. Unlike the other OTG safety glasses on the list, these glasses lie flat on the side of your head and are specially designed to fit comfortably under the earmuffs without breaking the noise seal.
The frames use the best acetate from the best suppliers in Europe. The factory that produces acetate is located in northern Italy. Although there are many other acetate manufacturers, they are arguably the best at what they do. In that industry, their acetate has been used in optical manufacturing since 1849.
How to Adjust Crooked Glasses
If one side of your frame looks higher than the other, you need to adjust the arms of your glasses. So, how to adjust glasses?
If the right side is higher than the left, you need to gently bend the left arm down at the hinge or where the arm bends behind your ear. If the left side is higher than the left, so just do the same action on the opposite side.
When adjusting crooked glasses, you need to adjust frames a little bit at a time to avoid overcompensating and possibly damaging your glasses. You can run the arms under the warm water but do not running the warm water over the lenses because it will affect the lens coating.
What is cellulose acetate?
Cellulose acetate refers to a thermoplastic resin obtained by esterification with acetic acid as a solvent and acetic anhydride as an acetylating agent under the action of a catalyst. It is the first commercially produced and continuously developed fiber among cellulose derivatives. Vegetarian organic acid esters.
What color lenses are good for driving?
The optometrist reminded us that it is not advisable to choose pink, purple, light blue, and other colors with obvious decoration effects for driving sunglasses. These colored glasses basically cannot protect the eyes. In addition, they may change the color and cause chromatic aberration. Generally speaking, you should wear brown and gray glasses when driving. The brown lens can filter out a lot of blue light, which can effectively improve visual contrast and clarity. The gray lens can absorb any color spectrum in a balanced manner and will not produce obvious chromatic aberration after wearing.
Nowadays, the colors of lenses for sunglasses on the market are dazzling. Many people only consider whether they look good when choosing colors, and do not pay attention to the impact of lens colors on vision. When choosing sunglasses, we should not only pay attention to their decoration but also pay attention to their protective function for the eyes. We should avoid using blue lenses when driving because it will make us unable to distinguish the color of the traffic signal lights.