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Message: <blockquote data-quote="matthew_" data-source="post: 3378676" data-attributes="member: 137083">This is what is going on. When I told the optometrist why the lens was not exactly 62mm IPD but 60mm..  He would say the optical labs have tolerances or allowances and our eyes can adjust. But I'm so sensitive I got eyestrain if it's not exactly 62mm IPD. So I actually argued with the 3 optometrists and quarreled with one because he said 2mm difference is really part of the optical labs tolerances.. this is because if I returned the spectacles to them.. they couldn't return it to the labs. But I heard that very accurate labs could produce a spectacle of exactly 62mm IPD. This is what I couldn't find in over 30 years (I'm 45 years old). This is what I'm looking for. If you remember or encounter any online fabrication lab with accuracy and good competence. Please let me know.</blockquote>