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- Nov 23, 2002
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But the huge problem which pissed me off royally is the prescription itself.
The optometrist asked me a good 30 times whether this or that lense was "Yes" or "No" (meaning better or worse). That suggests that he could have differentiated about a billion possibilities. I suspect that we can't tell the difference between more than about 1000 different lenses so ...
I expect an official doctor's prescription to read something like
1.072 far and
2.217 near.
Well, here's what he gave me ...
distance +1.00
reading 2.25
Whuddafuk! Says I. For about $40 bucks all I get is "uno" and "two and a quarter"?? It means that he's differentiating by quarters, i.e. from maybe a dozen possibilities.
Why?
The answer occurred to me right away. He's rounding off the numbers so that I can purchase the specs from a cheap mall type store (in this case it was supposed to be Sam's of WalMart fame) ... and ... they don't grind lenses in Sam's or even in the mall ... they grind the sides to fit the frame from a stock of hundreds of standardized specifications. Obviously, they can't stock a billion different sizes. So if you want a "true" prescription filled, you need to have them ground to your personal specifications ... and that costs a buck or two more (probably a lot).
Someone needs to share with this fellow that lenses come in quarter diopters...
The optometrist asked me a good 30 times whether this or that lense was "Yes" or "No" (meaning better or worse). That suggests that he could have differentiated about a billion possibilities. I suspect that we can't tell the difference between more than about 1000 different lenses so ...
I expect an official doctor's prescription to read something like
1.072 far and
2.217 near.
Well, here's what he gave me ...
distance +1.00
reading 2.25
Whuddafuk! Says I. For about $40 bucks all I get is "uno" and "two and a quarter"?? It means that he's differentiating by quarters, i.e. from maybe a dozen possibilities.
Why?
The answer occurred to me right away. He's rounding off the numbers so that I can purchase the specs from a cheap mall type store (in this case it was supposed to be Sam's of WalMart fame) ... and ... they don't grind lenses in Sam's or even in the mall ... they grind the sides to fit the frame from a stock of hundreds of standardized specifications. Obviously, they can't stock a billion different sizes. So if you want a "true" prescription filled, you need to have them ground to your personal specifications ... and that costs a buck or two more (probably a lot).
Someone needs to share with this fellow that lenses come in quarter diopters...
