I've seen this happen a number of times and can never quite explain it. A patient comes in with a pair of spectacles that we just made. They are SV poly with premium AR. The Rx, PD, lens material, base curves, AR and frame style are all identical to his old glasses. Yet the patient hates his new glasses and says that they give him headaches and are fuzzy. The old glasses are "much better". I recheck everything three times over and can't explain it. The only difference that I can see is that the stress patterns look slightly different through my double polarizing tester. Another potential difference is the AR may be different. However, at this point I'm clutching for straws.. I've had this happen 3-4 times over the years and it always confuses me. Any thoughts on what to do when everything is identical!
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