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@DanLiv I am having difficulty right trying to get a clear picture of this, it's much harder to see than a watermark for a progressive for example. I will keep trying.
@rbaker my purpose for my post...

A patient of mine has complained about seeing "specks" in his new lenses (asph poly Zeiss). I couldn't see what he was referring to until I shined my iPhone flashlight towards the middle of the...