As I read many of the threads here (and have read over the years), there seems to be a great thrust with many about this lens/material/treatment/coating being superior to that because of reasons: X, Y & Z. This isn't the consensus of all of us of course for any single given product, but many do seem to trend towards one material, manufacturer or vendor over another. My question isn't to get into the semantics of why you FEEL one product is "better" than any other, but what are the criteria you use to make your best educated decisions? What tells you that lens A outperforms lens B? If you have a lens that has yellowed and it's AR has crazed, would you continue to dispense the same because you believe in the marketing, the spec sheet they provide, or the company itself? What if you have a frame line that you really like the styles of, but can't get serviced by rep or home office? Or you have a lab that does immaculate work - but it takes a month to get a job back to you?
Where/how do you draw the deciding line between what's acceptable to you vs. what is (or should be) acceptable to the patients you dispense to? Is it performance alone? Profit margins? Back-end service? Remembering that this is all strictly subjective - how do you do it?
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