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Thank you! I searched for Dawn on Amazon. The only one I got is this: http://www.amazon.in/Ultra-Dishwashing-Liquid-Original-Scent/dp/B004SC9NCC/ref=sr_1_1?ie=UTF8&qid=1499803859&sr=8-1&keywords=dawn...

The customer is prepared for a new pair of lenses but he says he'll do them from me only if I assure him this problem will never happen again. I'm trying to eliminate all sorts of probable odds -...

I'm guessing it's the heat primarily because he says the lenses were pristine when new, but goes progressively worse when he exposes them to sunlight when commuting to work.

Thank you so much, knowledgeable peeps, for the valuable replies.

I have a copy of his frame. It is metal on the top with nylon under the metal. The nylon continues as a ring all around the lens....

Amazing replies! Thanks a ton. Yes it is very much possible he moves out suddenly into the heat from an air conditioned room. Avoiding that would be tough as well when he is at work, I guess.

I...

Will stripping off the AR coating strip off the UV and transitions too?

Amazing forum! Thank you so much for the awesome brainstorming.

I was thinking, will Polycarbonate be a better option for the customer? Does poly resist more stress fractures, heat expansion and...

Or maybe is it possible that the pilot has say 20℃ cabin temp, and when he opens the door in Greenland or Alaska or Siberia, bam! It's -30℃. Same might happen when he lands in desert countries when...

Yes, that is what distresses me. Two companies making wrong edging 4 times!

Yes. The last one is Zeiss Duravision Platinum with PF. 1.5 INDEX CR39.

Which type of frame causes least stress fractures? Acetate/Poly/Metal full rimmed/Metal Half rimmed?

Very good suggestion; eliminating the cause of the streaks. But I doubt he'll buy to that, mainly because of his high cylinder causing more reflections.








I called him around and told...

The company mounted the lenses. I'll check them tomorrow if he comes.

I'm beginning to fear he works in a chemical lab or something.

I wish I were the consumer. :tongue: They have the liberty of saying anything. The first time when I told him it's all in your head, he retaliated by saying, it's in my head too that you gave me a...

Thanks! I asked him about leaving the glasses on the dash, but he said something along the lines of with my strong prescription, my glasses are plastered to my face all day. :P

Thanks, but is it possible that stress fracturing is caused by expanding metal frames?

Thank you for the answer.

I can ask him about his work, but noxious hobbies? I know Barbecue and cooking can be a problem. I can ask him about it tomorrow.

My customer of 10 years has recently been facing a weird problem, which I've never seen in 22 years of my experience as an optician. He has been using Essilor Crizal brand Transitions lenses for 10...