ADS Sports Eyewear Best Price Guaranty

on every pair of prescription eyewear offered on this site

If you find a lower price we will match it, AND give you 10% of the difference*.

Here’s the details:

ADS Sports Eyewear is an authorized dealer for every manufacturer represented on this site, and pricing on this site is as low as an authorized dealer is allowed to offer.  This includes the prescription lenses from Oakley, Serengeti, and Kaenon.  If

you order prescription sunglasses made by any of these manufacturers you will receive an authentic prescription lens manufactured with the patented lens materials and colors that these manufacturers are known for.

We could sell these glasses for much less if we used generic lenses, and if you’ve never owned an authentic lens you might not notice the difference.  But we don’t take shortcuts with quality, ever.

The most important difference between our prescription lenses and lenses from other web sites is the Shamir Free-Form Digital Lens Design that we use.  That link provides more information, but the short version is that the curve at every point on a Free-Form Digital lens is recalculated to direct light to where it is in focus.  This eliminates the "fishbowl effect" typically associated with wrapped prescription sunglasses.  Our list price on these Shamir digital lenses is about half the MSRP, and we do a bunch of them.  We don’t believe anyone, internet or not, can sell this lens for less than we do.

We are emphisizing Free-Form Digital because most of the surfacing equipment at the bigger labs is now digital. On a Free Form Digital lens the prescription is recalculated at every point on the lens, so the entire lens is usable.  This computer-aided design produces sharp, clear vision throughout the entire lens, not just the center. And Free-Form Digital Progressive lenses have a wider reading corridor that flows more naturally into the rest of the lens.

A standard prescription lens have the same curve all the way across the lens. So the center is in focus, but the quality deteriorates as you look toward the peripheral portions of the lens. Many labs have digital surfacing equipment but choose not to pay the licensing fees to use free-form input. Because the machine that surfaced the lenses is digital some people refer to this as a Digital Lens. But this actually the equivalent of digitally recording your 8-track tapes.  To see all the benefits of a digital lens you need true Free-Form Digital input.

There are only two companies that have been able to develop a functional digital lens design: Shamir and Essilor.  The eyewear industry is not as impressed with the Essilor design.

The Essilor design will not work on 8-base sunglasses.  It can be used on some of the flatter 6-base sunglasses.  The Essilor lens company owns FramesDirect.com.  So Frames Direct uses their own digital design on prescription 6-base frames, but many of their 8-base prescriptions are made with standard surfacing equipment.  This can create a horrible fishbowl effect that is much more difficult to get acclimated to.

By The Way: Oakley, Costa Del Mar, and Kaenon all use a Free-Form Digital design that is based on this same Shamir design that we use.

Safety and common sense are never ignored in an effort to be cheap.  We use the highest grade polycarbonate or Trivex lens materials in all of our sports prescription lenses.  We never use CR-39 in sports eyewear, and certainly not in prescription motorcycle sunglasses.  The low prices posted on SportRx.com are based on CR-39 lenses.  At highway speeds a June Bug or a pebble with go right through a CR-39 lens.  We believe these guys are just a law suit waiting to happen.

This is a good place to elaborate on “highest grade” lens materials.  We are often asked “Why should I pay this much for sunglasses when I can buy them for $12.00 at WalMart”.  The answer is that not all lens materials are created equal.  If you heat up a big vat of polycarbonate the purest material will settle to the bottom and the less dense material will rise to the top.  The manufacturers that we promote on this site use only the purest lens materials.  Much of the mid-grade material ends up in fashion eyewear, and the least pure material at the top ends up in the cheap sunglasses at Exxon or WalMart.  If you want these you should go to one of the big eyewear conventions.  These glasses sell for about $50 per gross.

You would think you can just put on a pair of sunglasses and know instantly if you’re looking through an inferior lens.  Wrong.  This is easiest to explain if you know someone with macular degeneration.  Even though they have holes in their retina they do not see holes in their field of vision.  Their brain fills in the gaps with whatever it expects should be there.  Your brain does the same thing when you wear inferior lenses.  A better way to test lens quality is to read something small at a distance.

*If you believe you found prescription sunglasses for less please email the link to Chief@ADSEyewear.com.  This link is required to verify the price.  If they are selling the same frame with a digitally surfaced Shamir lens we will promptly match their price and give you 10% of the difference.  This does not apply to non-prescription glasses or lens-only Rx orders.

Thanks for reading our page.  We hope you are now a more informed consumer.