Are there any glasses that don't scratch?
There's no such thing as scratch "proof" lenses. (Even glass lenses can be scratched!) Scratches, while not likely to affect your lens performance, are an annoyance that can interfere with clear vision. That's why you should always request scratch resistant lenses (treatment) for your eyeglass lenses.
Polycarbonate lenses are gradually taking over a significant portion of the optical market share once dominated by plastic lenses. This is mainly because of its lighter weight, impact-resistant, thinner and more scratch-resistant properties.
Polycarbonate and Trivex lenses are more impact-resistant than glass and plastic lenses, and both usually have a built-in scratch-resistant coating.
A scratch on your eyeglass lens can impact your vision clarity and be quite irritating, especially if you only recently purchased your eyeglasses. Anti-scratch coatings, as their name suggests can protect your lenses from getting scratched, enabling you to enjoy your eyeglasses for longer.
Crizal lenses have a special coating on them that makes them anti-reflective and resistant to scratches.
Polycarbonate lenses are considered a “soft” material because of their lightweight, they need to have a scratch coating to prevent surface scratches. By adding the scratch coating it makes the lenses almost as hard as a glass material.
CLARITY. Glass lenses are by far optically clearer than polycarbonate lenses. This is why glass is primarily used in microscopes, binoculars, telescopes, and cameras.
The good news about polycarbonate lenses is that they're much sturdier and better-prepared for the worst than typical plastic glasses. This means that they won't scratch as easily because they have a scratch-resistant coating. If you do scratch your polycarbonate lenses, however, you may have a warranty.
The disadvantages of polycarbonate lenses include the fact that their abrasion resistance is poor, but when an anti scratch coating is added to this the impact resistance is reduced slightly. These types of lenses cannot be tinted easily.
Polycarbonate: Polycarbonate is the lens choice for maximum impact resistance. With the designation of High Impact, they are 10 times more impact resistant than conventional plastic or glass lenses.
Are acrylic lenses better than plastic?
Acrylic is slightly better with a light transmittance of 92 percent compared to polycarbonate's 88 percent. They are both often used for windows and other needs for transparent materials, and the plastic chosen often is determined by the need for other qualities, like impact resistance or scratch resistance.
The other problem – in case you needed one – is that, if your lenses are polarized (and they totally should be), you could scratch that effect right off your lens. So, now you have more scratches and less protection from glare.
Both are equally Good. Essilor Crizal lenses are better than any other branded lenses available in market. Zeiss is known for their premium quality and precision optics.
Scratch-proof, therefore, stands for more durability than scratch-resistant products. Scratch resistant, on the other hand essentially means that the product is able to withstand minor scratches. There are two ways to prevent scratches on delicate surfaces.
1) The thin layer of anti-reflective coating on the lenses can get scratched or worn down over time, which makes it harder for you to see clearly and, in turn, affects your vision. 2) They don't prevent all glare and light from reaching your eyes, so it may cause you to have eye strain or headaches.
Do Varilux lenses come with scratch resistance and ultraviolet protection? Yes, these options are available. Ask your eyecare professional for Crizal No-Glare lens treatment, which offers scratch resistance and UV protection. Crizal No-Glare treatment is available on all Varilux lenses.
NASA's Dr. Ted Wydeven of the Ames Research Center generated the technological seeds for the first scratch-resistant plastic lenses while working on a spacecraft water purification system.
In a nutshell, Varilux is a lens type, and Crizal is a brand of lens treatment. Varilux, a brand of corrective lens by Essilor International, provides progressive correction for near, intermediate, and far vision.
Trivex lenses have a higher Abbe value so they can produce both sharper central and peripheral vision with less chromatic aberration than polycarbonate lenses. Basically, your vision will be clearer and contain fewer distortions with Trivex lenses.
How to Tell the Difference Between a Polycarbonate Lens vs ... - YouTube
How do you get scratches out of polycarbonate lenses?
Squeeze a dime sized amount of regular toothpaste onto a clean, soft, cotton cloth. Rub the toothpaste onto the scratched surface of the polycarbonate lens in a circular motion for ten to twenty seconds. Dampen a clean, soft, cotton cloth in cool water. Rub the wet cloth over the lens to remove all of the toothpaste.
Glass and polycarbonate can both become scratched, but polycarbonate is less scratch-resistant, making anti-scratch coatings popular among glasses wearers. Impact resistance: A lens with high impact resistance is less prone to cracking or shattering.
The majority of Ray-Ban sunglasses now feature polycarbonate lenses. However, Ray-Ban currently manufactures two sunglass models with crystal lenses. They include the Ray-Ban G-15 lens, which has a rich, dark green undertone, and the Ray-Ban B-15 lens, which has a deep brown undertone.
Polycarbonate plastic has an index of refraction of 1.586, a specific gravity of 1.20, and is very impact resistant. This allows lenses to be thinner, lighter, and much more impact resistant than CR-39. Polycarbonate is considered the best choice of material for children and for safety glasses.
The polycarbonate lens is highly resistant to impact, won't shatter, and is 10 times stronger than a glass or a regular plastic lens, making them ideal for children, safety lenses, and physical activity. Lightweight and thinner than glass lenses, polycarbonate is more comfortable to wear for long periods of time.