Lens Types

Single vision
This lens type features one power throughout the entire lens.

Bifocal (lined)
A bifocal lens is equipped with two ranges of power: far and near. A line that separates the ranges makes them easily recognizable.

Trifocal (lined)
As the name implies, a trifocal lens has three separate ranges of power: far, intermediate and near. They are marked by two distinct lines.

Progressive (no line)
This is our most popular lens type. It changes gradually to ensure you can see far, intermediate and near distances without any lines of demarcation.

Lens Materials and Coatings

Our opticians will recommend lens materials and coatings that will optimize your vision in your new glasses.

Lens Material

Polycarbonate
Although this material is impact-resistant, it still scratches easily. Fortunately, other more advanced alternatives are available. Children’s lenses should be made of polycarbonate or Trivex to ensure your child’s safety.

Trivex
Since this material is both impact- and scratch-resistant, it is the preferred option for children’s eyeglasses, rimless and semi-rimless frames, and frames designed for safety eyewear. It’s the most durable lens material available today.

CR-39
A commonly used basic plastic lens material.

Hi-index
If you want light, thin specs with UV protection, hi-index lenses are the perfect solution. These lenses are comfortable and attractive, and they are available in varying degrees of thinness, measured using an index with these ranges: 1.6 – 1.67 – 1.70 – 1.74.

Lens Treatment/Coatings

Scratch-resistant
Most of our lenses include Scratch Resistant Coatings (SRC). Although this special coating helps resist scratches on the surface of the lens, remember that it is not scratch-proof.

UV protection
Ultraviolet radiation can play a significant role in the development of various eye conditions, such as cataracts, skin cancer, pterygium and macular degeneration. For this reason, we only sell sunwear with 99- to 100-percent UV-A/UV-B protection.

Blue light protection
You may have heard about blue light, which is emitted from electronic devices, such as mobile phones, iPads, televisions and more. Based on scientific evidence, we know that long periods of exposure to blue light may cause eye problems such as cataracts. It can also interfere with sleep patterns. To protect your eyes, we can add a blue light filter coating to your lenses or make the lenses out of a blue-tech material that helps block over 90% of blue light.

Photochromatic
By gradually adjusting the tint level in response to UV light exposure, this type of lens eliminates the need to switch to sunglasses when venturing outdoors. But keep in mind that these lenses are UV-activated and may not work in your car.

Lens Designs

Because we offer literally hundreds of lens designs, the choices can be daunting. Don’t worry. Our licensed opticians will select the right lens design for your lifestyle and budget. Here’s a breakdown of the two, basic options: conventional and digital.

Conventional: this type of lens can correct nearsightedness, farsightedness, and/or astigmatism, however high aberrations may still exist. Unfortunately, these aberrations can affect your vision. Lucky for you, there is an alternative.

Digital: Today’s high-definition digital lenses can actually correct aberrations, offering the potential for sharper vision than their conventional counterpart. They are designed to provide sharper vision in all lighting conditions and provide wider progressive lens corridors. They also keep the prescription optically true over a much wider zone in the lens and reduce glare for nighttime driving and other night vision tasks.

Computer/Reading
If you read or spend long hours in front of a computer screen – and who doesn’t these days – you’ll be glad to know that we make customized eyewear specifically designed to enhance ergonomic working distances. These eyeglasses are equipped with special lenses for computer use or as progressive lenses to be used for both computer work and reading.