Lens Info

Lens Styles

Single vision lenses are designed to help people who require correction of farsightedness, nearsightedness, or astigmatism. These eyeglasses have just a single optical prescription correction and they distribute focus evenly over the entire surface area of the lens. 

Plastic CR-39 Lens

Progressive lenses, sometimes called "no-line bifocals," are multifocal lenses that eliminate the lines of a bifocal or trifocal lens. They are considered "multifocals" because there is a seamless progression from distance to near with an intermediate section in between.

With progressives you can see clearly across the room or down the street while driving. You can also see your computer through the intermediate section. If you look through the bottom portion of the lens, you can read fine print comfortably.

Progressive lenses processed through ReplaceMyGlasses, are digitally manufactured and considered High Definition. Our sophisticated lens design software allows us to create lenses with minimal peripheral distortion and the widest corridors possible. We utilize the latest in equipment and lens technology to offer our customers the crispest most comfortable lenses on the market. 

Progressive Lens Zones: top is for distance, center is for intermediate or computer, bottom is for near

Bifocals are eyeglasses with two distinct optical powers. This allows you to see objects at all distances after you lose the ability to naturally change the focus of your eyes due to age, also known as presbyopia. 

Bifocal lens

Lens Materials

CR-39 lenses are the most basic lens material available. These are conventional plastic lenses that have no added features.

Polycarbonate lenses are thinner and lighter than plastic. They are impact-resistant lenses that are shatter-proof and provide 100% UV protection, making them the optimal choice for kids and active adults. They're also ideal for strong prescriptions since they do not add thickness when correcting vision, minimizing any distortion.

Hi-Index lenses are the preferred choice for the most demanding prescriptions. A high index lens is a lens that has a higher "index" of refraction. This means it has a greater ability to bend light rays to provide clear vision for people with stronger prescription. They are 30 to 40 percent thinner than CR-39 lenses and are manufactured to be thinner at the edges of the lens and lighter in weight overall. 

High index lenses are much thinner than standard plastic lenses

Lens Options

Photochromic lenses often referred to as transition lenses, are eyeglass lenses that will turn dark (resembling sunglasses) in sunlight and become clear again when indoors. Photochromic lenses are very useful for driving, sports, and outdoor activities. 
Photochromic (Transition) lenses transition from clear to tinted based on the brightness of the environment

Polarized lenses are specialized eyewear designed to reduce glare from surfaces such as water, snow, and glass. Glare distorts the true color of objects and makes them harder to distinguish. On polarized sunglasses, the filter creates vertical openings for light. This means that only light rays that approach your eyes vertically can fit through those openings. The lenses will block out all the horizontal light waves bouncing off a smooth pond or a shiny car hood. 

Color accuracy with non-polarized lenses vs polarized lenses

Anti-Reflection Coating, often referred to as AR, or non-glare, is a coating that is applied to the surface of a lens. The purpose of this anti-reflective coating is to reduce the amount of glare that reflects off your lenses. Anti-reflection coating prevents reflections from appearing on both the front side and back side of your eyeglasses. No reflections on your lenses mean more light is reaching your eyes, which inevitably improves your vision. 

Environment without anti-reflective lenses vs with anti-reflective lenses

Blue Light Filtering lenses have specially crafted lenses that are designed to filter out the blue light given off from digital screens. These lenses protect your eyes from glare and can help reduce potential damage to your retina from prolonged exposure to blue light.