How to Choose Lenses for Your Eyeglasses

Welcome to our lens & coatings guide, created to help you wrap your head around all the options of prescription lenses and lens coatings available to you when you purchase new glasses. Let’s begin:


1. Lens Types

Learn about the difference between single-vision, near-vision, progressives and bifocals. All prescription lens types can be used for both eyeglasses and sunglasses, unless indicated otherwise on the product.

Distance (Single-Vision)

This lens helps you see things far away. It is usually indicated by a (-) next to the numbers under the Sphere/SPH category of your prescription.

    • Prescription Range:
      lens
Reading (Near-Vision)

This lens helps you see things up close. The most common use is for reading. It is usually indicated by a (+) next to the numbers under the Sphere/SPH category of your prescription.

  • Prescription Range:
    lens
Bifocal (Reading & Distance)

This lens has two separate and distinct fields of vision: distance & near. A visible line separates the two.

Progressive (Reading & Distance)

This lens provides seamless progression of many lens powers for all fields of vision. It includes three fields of vision: near, intermediate and distance. There is no line on the lens separating the fields of vision.

Non-Prescription

A standard lens without any vision correcting powers and adjustments. This is the lens if glasses as a fashion accessory

2. Lens Index (Thickness)

All of our lenses are Digital Free Form lenses, crafted in our own in-house optical labs.

Standard 1.5 Lenses: Made out of CR-39 plastic. Are available for free on all of GlassesUSA.com’s lens packages. Recommended for weak-to-moderate prescriptions (+/- 1.75).

Polycarbonate 1.59 Lenses: The most impact-resistant lenses for eyeglasses. They are 22% thinner than standard lenses and are recommended for children and sports, as well as prescriptions of +/- 4.00.

1.6 Index Lenses: High index lenses up to 25% thinner than the standard lenses. Recommended for prescriptions of -4.00 to +3.00.

1.67 Index Lenses: Super thin lenses; the ideal choice for strong prescriptions to keep things light & thin. Recommended for prescriptions of -8.00 to +6.00.

1.74 Index Lenses: Our ultra thin lenses, recommended for anything beyond. Available to choose by contacting customer service after placing an order.

3. Lens Coatings

Anti-Scratch: The Scratch Resistant coating we use , greatly reduces the daily scrapes and scratches that damage your lens over time and affect their clarity. We use a top grade coating that is among the most resistant in the industry. Although the coating is not 100% scratch proof, it makes a big difference.

UV Protection: UV (Ultraviolet) rays from the sun are harmful to the eye and often are associated with cataracts, retinal damage and many other ailments. The UV coating stands strong in fighting those rays from penetrating your eyes while not affecting the overall appearance of the lens.

Anti-Reflective: As its name implies, this coating eliminates reflections of light from the surface of your lens. This allows for people to see your eyes better, and it allows you to see better. You really feel the difference especially when driving at night or long hours in front of a computer.

Digital Block: Protect your eyes from the emission of digital devices. Digital block coating can b