Aside from choosing the right color, shape, and material for your eyeglasses frame, you still need to pick the right lenses for your eyeglasses. Very few people nowadays use actual glass for the lenses, since they’re breakable and heavy.
So what are your better alternatives to literal glass for your lenses?
Materials for Lenses
- CR-39. This is the most common material used for plastic lenses. It’s very lightweight and also quite affordable. On the other hand, this material is comparatively easier to scratch. It can also look thick when you have a stronger prescription.
- This is another very popular option for plastic lenses. While it may cost a bit more, it does offer several noteworthy advantages. It’s extremely light in weight, so they’re very suitable for stronger prescriptions. It’s also highly resistant to scratching and impact, so it’s great for hyperactive kids and the sports-minded.
- This is even more resistant to scratching than polycarbonate, and just as durable when it comes to impact. It’s also even lighter than polycarbonate.
- These lenses are designed to reduce the glare, so they’re ideal for driving or for lots of outdoor activities.
- High-definition lenses. These are made to give you sharper vision as well as superior peripheral vision. These can also be suitable for more complicated eye problems. Ask your doctor about them if you have corneal scars or cataracts.
- Bifocals and trifocals. Maybe you have to deal with both farsightedness and nearsightedness. If that’s the case, then you need bifocals or trifocals, which are designed for both vision problems.
With bifocals, you have lenses with 2 different prescriptions so you can more clearly see objects that are near your face or far away from you. Trifocals have a 3rd prescription for objects that are near (but not that near) your eyes, such as your PC desktop monitor.
Coatings for Lenses
Coatings cost extra, but they offer several crucial benefits.
- Lenses with this coating tend to become darker when they’re subjected to UV sunlight. The photochromic treatment can be applied to any lens material. This type of lens is great for outdoor use. But it may not be perfect for driving, since the car windows can block the UV sunlight that triggers the tint of the photochromic lens.
- UV protection. Most lenses already have this coating, but you have to make sure. If you don’t have this coating, wearing eyeglasses can boost the risk of cataracts.
- Anti-scratch. Virtually all (about 95%) plastic lenses come with this coating. Check the warranty for the coating to see how long the coating is supposed to last.
- Anti-reflective. This is a coating you need when it’s harder for you to see at night, when you’re driving, or when you’re using your PC.
- Blue light blocking. The blue light from the PC monitor LED light may increase the risk of damage to your eyes, though this is still debated. The treatment blocks the blue light, and at the very least this can make it more comfortable for you to stare at your monitor.
With the right lens material and coating, you can have the ideal eyeglasses that suit your needs and preferences.