06/09/2017
What Are Multifocal Eyeglass Lenses?
If you have more than one vision problem, you’ll probably get glasses with multifocal lenses, like bifocals or trifocals. These have two or more prescriptions to correct your vision. In the past, you could spot this type of lens by the line between the two sections. But today’s products often look seamless.
Bifocals
The most common type of multifocal. The lens is split into two sections. The upper part helps with distance vision. The lower half is for near vision. They’re usually prescribed for people over 40 who can’t focus well anymore. That’s due to presbyopia, an age-related change that affects your eye's lens.
Trifocals
These are bifocals with a third section. It sits above the bifocal portion of the lens. You look through it to see objects within arm's reach, like a computer screen.
If you have questions about which type is right for you, talk to your eye doctor. She can help you choose the one that best fits your lifestyle and vision needs.
Eyeglass Lens Coatings
There are almost as many coatings as there are lenses:
Anti-reflective. It can help with glare, reflections, halos around light, and make for a nicer look.
Scratch-resistant and ultraviolet protection. Most lenses today have these built in.
Tinted lenses
Sometimes, a light or dark hint of color on the lens can help you see better. A yellow tint may increase contrast. A gray tint to your sunglasses won’t change the colors of things. A light tint can hide signs of aging around your eyes.
Mirror coatings
This is purely for looks, but it does hide your eyes from view. You can find them in a range of colors like silver, gold, and blue.
How Should You Care for Your Eyeglasses?
Always store them in a clean, dry place away from things that can hurt them.
Clean them with water and a non-lint cloth. That’ll keep them spot-free and help you see clearly.
See your doctor yearly to check your prescription.
Glasses can correct some common vision problems, but don’t forget to schedule routine eye exams to keep your eyes healthy.