What Is Plastic Lens?
In the above part, we have introduced what polycarbonate lenses are. In this section, we will show you what the plastic lens is.
The plastic lens was first introduced in 1947. Since then, plastic has become a popular and widely used material for making eyeglasses lenses. Since the introduction and use of plastic lenses, it has sealed its mark as the most preferred choice in the optical industry.
Plastic lenses are light. With this feature, plastic lenses are popular because they will not be heavy inside the glasses frame and permit for an easy fit in any type of glasses frame. In addition, plastic glasses are cheap and easy to obtain in desired amounts. So, they are affordable for most people. Plastic lenses are very durable. So, they do not shatter easily on impact which makes it a great choice for individuals who are active or tend to drop their glasses often.
However, compared with other lens materials, plastic lenses are usually thick due to their low index of refraction. The soft feature of plastic glasses makes them susceptible to scratching from a sharp object and why scratch-resistant coating is applied to form an additional protective layer. Plastic lenses do not provide ultraviolet protection.
Loch Eyewear, a Canadian company, makes prescription glasses and sunglasses from 500-year-old North American wood and plant-based plastic frames. Their glasses are made in Canada and feature high definition, durable, anti-glare polycarbonate lenses. Loch Eyewear provides a home trial program that allows customers to try three frames at home for three days with free shipping in both directions. If you like a pair of glasses, they'll put the lenses inside them and send them back to you.
How to choose the right glasses for myopia?
Nowadays, people are nearsighted, and they usually think of going with a pair of glasses. However, only from the media, we continue to see that there are substandard myopia glasses and frames in the report, so how should we choose when we buy glasses? How can I match a pair of suitable and high-quality glasses? Different glasses shops vary greatly from optics technology to the quality of lens frames, so different shops have different prices. Faced with a variety of glasses, how should we choose? Generally, we can look at these four standards. First, take a look at whether the eyewear company has obtained a production license for eyewear products. Second, see if the optometry equipment and testing instruments of the glasses companies have qualified marks. Third, see if the optometry and production staff are certified to work. Forth, look at whether the glasses have a conformity mark (certificate). The four certificates of eyewear companies are the prerequisite to ensure the quality of glasses.
Transitions® Photochromic Lenses
When you step outside, it immediately begins to darken. The lenses help prevent harmful blue light from digital devices, screens, and sunlight to help reduce glare and prevent eye strain. They have the function of 100% UV blocking,anti-reflection treatment with blue light protection. They can constantly adapt to changing daylight conditions to reduce excess light and optimize color contrast and polarized light to prevent dazzle. They filter out excess light to provide maximum comfort. And provide high contrast and minimize glare. They provide increased color recognition and depth perception.
Sunglasses are a type of non-prescription sunglasses.
Sunglasses are popular non-prescription glasses. As a kind of non-prescription glasses, sunglasses can protect your eyes. Many sunglasses filter out ultraviolet lights, which can be harmful to your eyes. Wearing sunglasses can help keep your eyes healthy. Sunglasses have become fashion's flagship products, and countless products can be sold at different prices. The combination of function and fashion has made sunglasses the favorite type of non-prescription eyewear for consumers.
How much are rimless glasses?
Generally, the price of rimless glasses should be determined according to your choice of frame and lenses. Some of the rimless glasses are very expensive. Most of these rimless glasses are reserved for business people. Generally speaking, if it is for business people, the price will be more expensive. But if you just want to match some of the common glasses, rimless glasses' price usually will not be too expensive, about 15 dollars to 30 dollars. But business people's special glasses frame will be about 150 dollars to 350 dollars.
What Are Progressive Lenses?
Traditional eyeglasses are usually single vision lenses with one prescription. Progressive lenses are multiple with three prescriptions in a pair of eyeglasses. Progressive lenses let you see comfortably at different distances, allowing you to see close, near, and far without changing your glasses. There are other kinds of multifocal lenses like bifocals and trifocals, but progressive lenses differ because of their smooth transition between prescriptions.
Bifocals and trifocals work similarly to progressive lenses and feature either two or three prescriptions in a pair of glasses. These lenses have definitive lines separating the prescriptions. However, progressive lenses don’t use these lines and allow you to easily transition between prescriptions.
Hence, in the following section, we will show you 6 different types of progressive lenses.