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| subject: | photochromic glasses |
-> It sounds like you have progressive lenses, and for the first time! A word
-> caution, the vertical position of the lens is critical. Too high and you ar
-> always looking through the reading portion of the lens (this gives me a
-> headache). The only way I can tell for sure that it's happening is to drive
-> night on a straight and level stretch of road, with another car far ahead of
-> me. I look at its tail lights. If I have to lower my chin to see them
-> clearly, I know my lenses are too high. Looking straight ahead, those tails
-> lights should be in focus. If I have to lift my chin very far to bring them
-> out of focus, the lenses are too low.
-> The lenses can be raised (or lowered) a millimeter or two by moving the nose
-> pads closer together (or further apart. If more adjustment than this is
-> required, bring the glasses back to the place you bought them. They will ne
-> to order new lenses and cut them again, at their expense.
-> I would say I've purchased about eight pair in the last 10 years, and all bu
-> one time the lenses had to be re-cut. I'm convinced that many of the people
-> who've tried progressive bifocals and claim they can't wear them are just
-> victims of poorly fit and poorly adjusted lenses.
Adjusting the nose-rests is certainly one way of customizing a pair of
glasses to fit your particular face, but it is by no means the only
one. Everyone's face is asymmetrical to some degree. My nose is
slightly crooked, as a result of a childhood accident, and my left ear
is a few millimetres higher than the right. To make a pair of glasses
fit me perfectly, I have not only to adjust the nose-rests, but also to
bend one arm of the glasses slightly upward and the other slightly
down. Usually, I also have to bend the ends of the arms down at a
sharper angle than the original one, so as to make them fit more snugly
around my ears. I like them that way, so the glasses do not slip down
my nose no matter how much I shake my head. Also, doing this pulls the
nose-rests up to the top of my nose.
I got a new pair of glasses yesterday, and am still adjusting them by
trial and error. I've got them *nearly* right, now.
One thing I have *never* had to do is get the lenses re-cut. I must
have had about a dozen pairs of glasses in my life, including three
pairs of progressive multifocals. Very often, when they've been
brand-new, I have found that glasses don't work very well, but I have
always been able to adjust the frame so as to make them work as they
should.
dow
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