Name: How To Identify Lens Materials
Uploaded: 2018-12-15T05:58:05.000Z
Duration: 14 min 36 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

to the Laramy -K OpticianWorks Training Center.

Couple of weeks ago I got back to back emails

"Can you help me identify different lens materials?"

And as is so often the case here I say sure!

and part of the practical exam for getting your license

in the State of Virginia was lens material identification.

We had stacks of trees, where we would practice this

and think about all the things that we could do

in order to tell what material we were holding in our hands.

The truth of the matter is, it is extremely rare

that you really need to know what material you have.

Once in a great while, you're gonna have somebody come in

maybe it's an older person they just moved into town

and you can't get their information from there.

You take their glasses apart, and you've got this one lens

I'm gonna give you some tips to figure that out.

What's nice is today so many older folks particularly

on the progressive lens, and you have your ID chart,

or you go out online, you can find out exactly

what material that lens is made of, you're done.

some of your specialties single vision products

they will have it marked on there as well

in order to cut a set of lenses if I'm not sure

that that really doesn't matter all that much.

and take the lenses from the old frame that broke perhaps

and you're gonna try to put them in a new one,

and you need to know what settings you're going to put it on

that's where identifying the lens material you have

especially in the one lens scenario, do what's right.

If you have somebody in a plus 50, or a minus one

and then in turns out, they are like in a 174,

get them out of the 174 don't just go for that

good part of all of this, is if you're not sure,

you know single vision lenses in particular

it's not gonna hurt anything, if you're priced right

you're gonna come out of the head at the end

rather than guessing and putting in the raw material

and having them complain and trying to troubleshoot

My students had a little saying I really liked,

And we'll get over to the bench in a minute

What's nice about this, is you can tell what poly is,

not that you are gonna edger that anyway.

I'm gonna show you how you can tell what trivex is.

the edger just has one setting for high index

We're gonna run through every single possible material

We are gonna talk about what that material feels like,

Subtitles ListPlay Video

How To Identify Lens Materials

scenario

material

matter

common