OK, check out this math.
Assume you expect frame to turn an average 4x/yr.
Assume you see an average number of exams/yr= 2000.
Assume half need glasses=1000
Therefore, you need ONLY 250 frames in your inventory.
Assume 3/4 need glasses=1500 (which is high, IMO)
Therefore, you need only 375 frames.
Is anyone's this low? I'd doubt it. I'd say most have 400-600 frames.
The point? Less is more. If you're a sharp buyer, you can have, say, 300 frames and lessen your inventory investment. Assuming all things above.
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