Tweet
Jo, Al is right , you will have to get back the ceramic stone and also run it with a lot of water. From one who has done close to a half million pair of glass lenses, i can also tell you that it is a matter of running the lens around the stone the right way, which is not to hard and several times, until you see the stars and flakes disappear. Of course you have to do it on the front and back, and usually your back edge will be the worst. One clue, and you will especially see this with flint glass and photocromatics, is to watch for an orange glow where you are beveling. If you see this you are pressing too hard or you need some more water. Its really easy once you do a few thousand. You should be able by that time to hold the lens between your thumb and first finger and push the lens around evenly with your left thumb, assuming you are right handed. When you really get good you will be able to hold one lens in each hand between the thumb and first finger and do two at a time. We use to do this as a joke years ago at B&L when the execs came down from Rochester.
-
-
Hope someone hasn't mentioned this yet. New product from Hilco. Universal mount nose pads. Same pad fits push-on, Screw-on and snap-in. Means you only have to have about 1/3 the number of nose pads to keep up with. Comes in several shapes including round.
Have been using about a month or two and find I am much less likely to not have a nosepad I need.
ChipComment
-
Harry,
Believe it or not (hopefully not); I am old enough to know how to do a one handed bevel. With my left hand, now that one I don't believe I am quite co-ordinated enough to do.
This one if for you, Al and Chip. One of the old Guild Guys I used to work under, Norm Wheeler, told me he used to make custom sized segs then attach them to the lens. I can't imagine grinding the things let alone edging them by hand with a stone and bull nose. How well did the adhesive actually work back then? He told me in a pinch he used to use corn syrup or starch; I can't remember which.Comment
-
Jo: In Glass, the custom segs were ground as a thin wafer and attached with Canadian Balsam. Could be removed with Zylene. These were and are used more for the rare cases when a different prism requirement is needed for near than distance. We could do this in our small 4 man in house lab in a few hours. It takes specially labs months to do this in plastic. Strange isn't it?
However when you need to do this in plastic, you can make two pairs of S-V lenses and split them (touch up with a disc sander) and mount them in the frame. You can do this quickly and much less expensively than having something custom made.
ChipComment
-
How about dispensing troubleshooting tips? We could all probably stand to touch up on this area and some of us could use some training as well.
OK - Px comes in after wearing glasses for a week. New Rx with + Rx on top over 3.00 add. Seg is fit to lower lid. Px is having trouble with glare watching TV and reading isn't as good as old RX. Letters look fine but things don't feel as comfortable. What do you do?Comment
-
I personally would check the old rx for - AR coating on old but not on new, different axis, and difference in OC's. Also frame fit and BVD, particularly if it's a high Rx.
Now can the people who know please post what you're ACTUALLY supposed to do, in case someone mistakes this for a correct answer? :)
(And the edit was for some shocking grammar to be corrected, Harry)
[This message has been edited by Maria (edited 04-05-2001).]Comment
-
Jo, had the lab do a job the other day that called for +4.00 add on a photo-gray X , did a SV carrier lens and a bonded on ft-30.. segment, worked great! Took a few "days" to get. ha ha Al.Comment
-
Here is a common troubleshooting tip. Patient comes in wearing pgx lenses and you switch him to clear lenses. In most cases they will hate it as they are so use to a tint that everything now seems too bright and they will swear the rx is wrong. Probably best to keep them in that tinted lens.Comment
-
Harry, good point; we often forget about tint changes.
OK, the above troubleshooting exmaple - same as Maria, tell me if I am wrong or add to it if you have more tips.
I would compare Rx to see if add is much higher. I would also compare new seg height to old. High plus on top with high add means the Px may catch reflections of the top of the seg. I would try a little panto and try dropping the segs a little bit by opening up the nosepads. If the new seg is way off from the old height I might need to remake them lower. As long as I am remaking them I probably should mention AR.
Along these same lines, what would you guys put a round seg or blended wearer in with the same Rx, would you keep them in the same or try to get them into something else?Comment
-
This one is an actual problem I encountered some time ago. Px never came back so I don't know how she fared in the end.
Who: Kindergarten teacher
What: Presbyopic
Special Needs: Needs to hold book or see board above her head to read read them and have them be visible to kids at the same time. Needs to be able to see kids sitting on floor when looking down. Wants to see clearly to back of the room. Hopes to get it all out of one pair of glasses, very reluctant to use 2 pair.
Fit With: PAL
Problem after dispense: Uncomfortable trying to hold head in right position to focus on everythin. Freqently looks from one near point to far things out of focus most of the time.
What would you guys do in this situation?Comment
-
Jo,
If the problem you're describing is what I'm understanding it to be, occupational bifocals might be the answer. That way, she would have the reading power for looking above her head, and also for normal reading - and distance vision to look out and see little Johnny pulling little Suzy's hair... again!
The main problem is summed up in the fact that she wants one pair of glasses to do everything. Maybe one day someone will invent such a creature (and we will all invest in their company).
BlakeLight travels faster than sound, which is why some people appear brighter before you hear them speak.Comment
-
Jo, have you thought about using a ribbon seg for this problem?Comment
Comment