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Another option we’re going to talk about is high index lenses. You can go into to any
number of optical stores and they are going to call these high index lenses a whole bunch
of different names. A lot of places like to call them featherweights, or lightweights.
What it comes down to though is that these lenses are identified by numbers and these
numbers are called index of refractions. There is an index of refraction of 1.50 which is
just your basic plastic and then the higher the number the thinner the lens and they go
up in gradient steps of thin, thinness so to speak. There is a 1.60 and there is a 1.67,
if you have over a minus two prescription you might want to consider these options to
thin down your lenses. You buy these nice expensive frames but all of a sudden your
lenses look really thick in them. High index lenses are going to thin the lens down approximately
one to one point five millimeters, per upgrade, so you move from the 1.60 to 1.67, about one
to one point five millimeters thickness difference, you’re thinning that lens down. Under a
minus two point zero dipolar prescription you’re, you’re not looking at a whole
bunch of edge thickness so that’s kind of overkill, if somebody’s offering you that
lens, just kind of consider what I’m saying. It may not be worth the *** for the buck
to do that but if you’re over a minus two point zero have an associate optician talk
to you about your options and what you can do.