On 1/4/11 3:10 AM January 4, 2011, Biju Chacko wrote:
On Tue, Jan 4, 2011 at 4:06 PM, Nishant Shah<[email protected]> wrote:
1. Causa Materialis. Apart from the Aristotlean overtones, it is actually
the chief cause that affects the price range. Normal spherical glass lenses
are dirt cheap. But if you have a higher power, a cylindrical axis or other
such anomaly, then they will be useless and it is time to shell out more
money. If your lenses are fibres, then you need to further look at whether
they are anti-glare, scratch-resistant, dirt-resistant and branded. For each
feature the prices will rise. My younger brother's recently gotten himself a
pair that is shatter-proof, which means that even if you crush them, the
lenses don't shatter and you are not likely to be blinded by an incoming
shard.
This is exactly what bothered me -- other than believing the salesguy,
how can you tell whether your new lenses _are_ anti-glare, scratch
resistant and what-not?
-- b
~
After your children test-drive a few pairs, you can tell. :)
--
Heather Madrone ([email protected]) http://www.madrone.com
http://www.sunsplinter.blogspot.com
I'd love to change the world, but they won't give me access to the source code.
