:D If your going to buy a stock of minus lenses,buying the bigger blanks may be handier as they will fit almost any size frame you might use. Keep in mind that with a minus lens, no matter what the size of the blank, the edge and ct will be the same for any given rx. EX: a minus 5.00 cut from a blank 55mm,65mm or 80mm will have the same edge thickness from either lens as long as the ct,s are the same.
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