Distinguishing Lenses

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

dianepham@gmail.com - 08 Jan 2006 08:12 GMT

My brother recently bought a pair of glasses from an EyeMasters at the
mall. This year, he opted to pay more for the "thinner, lighter,
anti-reflective" polycarbonate lenses instead of regular plastic,
partially because one of the frames was a "half-frame", and more of the
lens would be exposed; he as a strong prescription, causing a thicker
lens. However, when he got the glasses back, the new poly lenses were
actually thicker than his old plastic ones. Granted, his prescription
did change slightly, but is it possible that he was accidentally given
plastic lenses? Is there a way for us to tell the lenses are indeed
polycarbonate?

Reply to this Message

Dom - 09 Jan 2006 10:39 GMT

> My brother recently bought a pair of glasses from an EyeMasters at the
> mall. This year, he opted to pay more for the "thinner, lighter,
[quoted text clipped - 6 lines]
> plastic lenses? Is there a way for us to tell the lenses are indeed
> polycarbonate?

When you 'click' it with something made of metal (like your wedding
ring) it has a higher-pitched, more 'plasticky' sound than standard
plastic. Hard to hear the difference unless you can compare directly.

Also, if you look through the polycarb lens near the edge, the vision
may not be as clear - although this is not exactly a 100% reliable method.

Dom

Reply to this Message

William Stacy - 09 Jan 2006 12:15 GMT

It could be that the new lenses are larger than the old ones (in the
horizontal dimension), which also makes them thicker. If the same size
or even smaller, then sounds like an error was made. The error could be
wrong material, or could simply be they ground the lenses thicker than
they needed to.

w.stacy, o.d.

>> My brother recently bought a pair of glasses from an EyeMasters at the
>> mall. This year, he opted to pay more for the "thinner, lighter,
[quoted text clipped - 15 lines]
>
> Dom

Reply to this Message