What effect does a lens with the hard film have?
In order to improve the wear resistance of the lens, it is necessary to coat the surface of the lens with hard film. At present, silicon atoms are used to stiffen the membrane, that is, the stiffening solution containing organic matrix and inorganic superfine particles including silicon element is used to make the hard film have toughness and hardness at the same time. Because the common resin lens is far easier to wear than the glass lens, so the addition of hard film is mainly used for resin lens. It is usually applied to the front surface of the lens, and the anti-wear ability of the resin lens with the film will be enhanced a lot, and the light permeability will be strengthened.
Blue light blocking glasses to protect eye health
The protective effect of blue light blocking lenses requires professional equipment, such as spectrometers, to detect the transmittance in the blue wavelength band, and consumers cannot detect them on their own. For anti-blue glasses, if you consider buying, it is recommended that consumers choose to buy from a professional optical shop.
In the digital society, people are increasingly inseparable from electronic screens. In order to protect eye health, many people fall into the misunderstanding that anti-blue glasses must be worn for a long time. In this regard, wearing anti-blue glasses also needs to vary from person to person and from time to time. If you watch the screen for a short period of time every day, and there are intervals, pay attention to rest, you do not need to wear anti-blue glasses. For people who frequently and continuously perform high-intensity visual tasks, it is recommended to wear anti-blue light glasses due to the possible medium and long-term cumulative effect of blue light.
Consumers must distinguish the specific situation when buying blue light blocking glasses, and then choose the best blue light blocking glasses that suit them. The right choice of fashionable and suitable anti-blue glasses can give your eyes full relaxation and comprehensive protection!
How to Get Used to Progressive Lenses?
It is common that your vision may change when you are over age 40. You can find it is happening when have to hold your favorite book, the daily newspaper, or a restaurant menu farther away just to read it. This is an eye condition called presbyopia. It is normal and almost all of us get it as we reach middle age.
This eye condition often can be corrected by progressive lenses which allow you to see objects from far to near clearly. With progressive lenses, you do not have to switch your glasses to see far or near objects frequently.
However, since progressive glasses have three different prescriptions in one lens, it may be difficult for some people to adapt to the new ones. So, in this post, we will show you how to get used to progressive lenses.
Where to Buy Blue Light Glasses?
From the above part, you have learned the advantages of blue light glasses. Hence, you may ask where I can get a pair of blue light glasses. Thus, Koalaeye Optical would be a good choice since it provides various blue light blocking glasses with beautiful and fashionable frames. Besides the blue light glasses, Koalaeye Optical also provides other eyeglasses and sunglasses. You can choose the satisfied one from here.
Pure titanium spectacle frame
Pure titanium is α-phase titanium containing a certain amount of oxygen, nitrogen, carbon, silicon, iron, and other element impurities. Titanium is an indispensable material for modern aerospace science, marine science, and nuclear power generation, and other cutting-edge science industries. Titanium is 48% lighter than ordinary metals, has strong toughness, acid and alkali resistance, corrosion resistance, high stability, high strength, good elasticity, and other advantages. It is in line with ergonomics. Titanium is non-toxic to the human body and does not have any radiation.
Progressive lenses and single vision lenses
Single vision lenses are the most widely used optical lenses and are suitable for the general population.
Progressive lenses are suitable for below people.
① Myopia control lenses for teenagers. Progressive lenses are used to relieve visual fatigue and control the development speed of myopia.
② Anti-fatigue lenses for adults. Progressive lenses are used for teachers, doctors, people who use too much computer at close range to reduce visual fatigue caused by work.
③ Progressive lenses for Middle-aged and elderly people. A pair of glasses for middle-aged and elderly people to easily see near and far.
3 Common Problems with Progressive Lenses
Though progressive lenses are popular to correct some eye conditions, there are also some drawbacks. So, in the following section, we will show you some common problems with progressive lenses.
Dizziness: the three different focal lengths of progressive lenses can make people susceptible to dizziness, as well as vertigo. From long to medium to short distance, the lenses offer a gradient of increasing strength. So, it would have trouble in adapting the glasses for the people who are wearing them for the first time. A common mistake is to look out of the wrong focal length, causing their vision to be blurry and lead to an overall feeling of dizziness.
Peripheral distortion: another common problem of progressive lenses is the way in which they blur peripheral vision. Most glasses cause an initial distortion to vision. However, the three different segments found in these lenses can make that distortion feel more prominent than other pairs of eyeglasses. And most people may need two weeks to adjust to progressive lenses.
Depth perception: Since progressive lenses provide three different prescriptions to see objects clearly for different distances, it is important that you need to move your head instead of your eyes when focusing on objects at different distances. Prior to adjusting to this little nuance, progressive lenses can cause depth perception to feel off.
From the above information, you have known some common problems with progressive lenses. So, you may ask how to adjust the progressive lenses. The most popular way is that you need to wear them frequently.
