How To Tell The Difference Between Polycarbonate And Plastic Lenses

An anti-reflective coating is put on eyeglass lenses to lessen the number of internal and external reflections on a lens. This coating increases the level of light transmitted through the lens, which improves the standard of vision. After hard impact, glass lenses may shatter which explains why polycarbonate lenses are used in safety and sports glasses.

rays that can accelerate the development of cataracts and macular degeneration. While no lens is scratch-proof, this special coating does make lenses harder to scratch when dropped or rubbed against a difficult surface. The anti-reflective coating decreases unwanted glare and halos at nighttime. It also makes the lenses appear somewhat invisible and very thin. Polycarbonate lenses also have built-in ultraviolet protection.

Advantages And Disadvantages Of Polycarbonate Lenses

Polycarbonate lenses are even more impact resistant than CR-39. This is why polycarbonate lenses are recommended for glasses in active sports and motorcycling. Polycarbonate is also useful for bulletproof vests and space shuttle windows. Plastics lenses also prevent chipping more effectively than glass. One of the greatest great things about polycarbonate glasses is they are often thinner than other styles of lenses. This makes them ideal for people with strong prescriptions. Lighter, thinner eyeglasses are less likely to slip off your nose and so are more
Contrary to popular belief, you can’t always tell the difference between polycarbonate vs. CR-39 lenses instantly. Your best bet will be reaching out to your local optical store or among our friendly opticians. But don’t worry—a good scratch coating helps immensely to keep them on par with other lens material options. Polycarbonate and Trivex lenses both block completely of the sun’s UV rays with no need for special UV-blocking lens coatings.

• If not, then they are most likely glass or, once more, hard plastic.
• This makes them ideal for people with strong prescriptions.
• They may cause a number of eye problems including cataracts and pigmentation.
• This is your best option if you fail to adapt to polycarbonate because of distortion issues and need a thinner lens.

If you have a high prescription, high-index lens glasses could be made to be more cosmetically attractive and appealing. Plastic lenses are inexpensive and affordable than polycarbonate lenses which are more expensive. It is a tiny bit more pricey for the polycarbonate, but is worth every penny as you are getting a far greater lens. Shatter proof, thinner, lighter material and just feels better on your own face as you have less weight there. Glass and plastic serve most of the same functions but with some very distinct differences. Not merely are they noticeably dissimilar in the manner they transfer sound, in addition they handle temperature in drastically different ways. Glass will be a lot similar to thin, smooth rock, holding heat and cold much more efficiently than plastic which will resist any significant temperature change.

Best Prescription Motorcycle Glasses

The refractive index can reveal how accurate and powerful a lens can be. The second benefit of having an increased refractive index has been in a position to handle stronger prescriptions.

• While no lens is scratch-proof, this special coating does make lenses harder to scratch when dropped or rubbed against a difficult surface.
• In case you have a stronger prescription, it is possible to still get a lense that

The eyeglass lenses are either made of glass or of plastic, specifically of, polycarbonate, CR-39 , mid-index plastic, and high-index plastic. CR-39 is the most commonly used material these days, polycarbonate is the second. Plastic lenses do however have their benefits and drawbacks when compared with glass lenses. Ophthalmologists recommend polycarbonate lenses for children as a result of lenses’ durability. Adults who regularly play sports or who hold active jobs would also benefit from these types of lenses. Your eye doctor will help you decide if polycarbonate lenses are appropriate for the specific prescription and lifestyle.

Fog Free Lens Coating 2 Oz Pump Spray Bottle, #acc

That is an optical error that triggers colored halos around lights. A lot more impact-resistant than CR-39 plastic and high-index plastic lenses . However, thinner lenses won’t necessarily mean they’ll weigh less. The same attribute which allows high-index to be thinner, helps it be heavier. With all things equal, polycarbonate is around 18% lighter than high-index.