So from the information that everyone is contributing it seems that it is not an issue of the dispenser or the person in the lab finishing the lenses but unknown knowledge on the part of most people both on the retail sales floor and those doing the finishing in the lab. Finished polycarbonate lens edges whose matrix will absorb the chemicals(alchohols and others) of lens cleaners over time causes cracking and crazing of the poly matrix. If our industry, especially the people withing the retail establishments which have to answer to the public consumer giving them credable answers would ultimately cause a solution via informed seller and consumer. At this point most are unaware of the cause leaving sceptisism in the minds of the consumer and the frustration of the selling professionals. Maybe the Optical Labratory Assocations who provide finished coated lenses should provide a bottle when they sell orders to inform the optical practices regarding edge coating thier lenses with the same material they coat thier lenses with. Just a thought to keep relationships all round on better footing.
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