National eyeglasses with your progressive prescription lenses assist in combining your needed prescription in a fashionable way without spending a lot of time and money. Our dedicated staff of eyewear specialist will walk with you every step of the way in getting your pair of National eyeglasses right the first time. Contact us with any questions you are struggling with and feel confident in knowing you have someone to trust with your future purchases.

See our How to Read Your Prescription guide for information on how to order the National No Line Progressive NA0231 from our on-line store. Contact Us if our Progressive Glasses experts may provide assistance with the National NA 0231 progressive eye glasses. We are also here to help with the NA 0231 and our complete collection of National products including National Eyeglasses, National Eyeglass Frames.

National NA0231 Eyeglass Frames Description:

• Frame Type: Plastic
• Flex Temple: No

Package Contents:

• Genuine National NA 0231 Prescription Rx Eyeglasses with No Line Progressive Lenses

National Eyeglasses Prescription Information:

We, at OpticsPlanet, try to make it easy to order Progressive Eyeglasses on line by providing as much information as we can. See our detailed Rx information page that explains How to Read Your Eyeglasses Prescription.

Available National NA0231 Prescription Lens Styles:

• National Eyeglasses NA0231 with Single Vision Lenses
• National Prescription Eye Glasses NA0231 with Rx Lined Bi Focal Lenses
• National Prescription Eye Glasses NA0231 with Rx No Line Progressive Lenses (presented above)

These National Eyeglasses are also available as National Frames without prescription lenses:

National NA0231 Eyeglasses without lenses

National Progressive Eyeglasses Rx Lenses are available in the following lens materials:

• CR-39 Plastic (also known as hard resin) is overall cost-effective & most commonly used lens material. CR-39 is thinner and lighter than glass. Recommended sphere range is 0.00 - +/-8.00 and cylinder range is 0.00 - +/-2.00
• Polycarbonate is the most impact resistant lens available. Polycarbonate lenses are highly recommended for kids, sportsmen and military. This lens material is thinner & lighter than CR-39 or glass. It blocks UV rays. Anti-scratch coating is included. Recommended sphere range is +/- 2.00-8.00
• Aspheric Polycarbonate lenses feature the same properties as polycarbonate lenses, but they are recommended for plus (+) sphere prescriptions only
• High Index 1.60 (also known as HX 1.60) lenses are thinner & lighter than CR-39 or glass. Recommended sphere range is 0.00 - +/-15.00
• High Index 1.67 (also known as HX 1.67) lenses are thinner than High Index 1.60, CR-39 or glass. Recommended sphere range is 0.00 - +/-16.00
• Glass lenses feature superior optical quality and scratch resistance. Although glass is heavier and thicker than other lens materials. Recommended sphere range is 0.00 - +/- 3.00