ComputerGlasses.txt                                      04/08/14
                  GET YOURSELF SOME COMPUTER GLASSES
                  ----------------------------------
                  
   Whenever you see a picture of an older person at a computer, they're bent 
   over, squinting at the screen.  Get some 'computer glasses' and you won't 
   have to squint any more.
   
Why Do People Squint?
---------------------
   They squint because they're wearing reading glasses that are prescribed 
   to focus at a distance of 14 inches, which is the normal distance for 
   reading printed material.
   
   Your computer screen is usually 24-28 inches away from your eyes.  In 
   general, the bigger the screen the farther away it is.  Your reading 
   glasses don't focus at 24 inches.
   
What Are Computer Glasses?
--------------------------
   Google 'Computer Glasses' and you'll find ads for 'anti-glare' tinted 
   glasses for $100 and up.  That's not what you need.

   Try these links for non-sales optical info:
      http://www.allaboutvision.com/cvs/computer_glasses.htm   
      http://lifehacker.com/5980509/do-computer-glasses-really-work
   
   What you need are reading glasses that have a lower magnification than 
   normal reading glasses, so that they focus at a longer distance from the 
   eye than standard reading glasses do.
   
   My reading glasses are 1.75 diopters, so I got 1.50 computer glasses, 
   which work great.  
   
I Don't Want to Spend a Lot of Money
------------------------------------
   You probably won't have to.  Since I've had cataract surgery in both 
   eyes, I don't need glasses for long distance, and both lenses of my 
   reading glasses have the same prescription.  So I went to the drugstore, 
   found a pair of 1.50 'reading glasses', did a little comparison testing 
   with my regular reading glasses, and spent about 15 bucks for long-term 
   comfort.
   
   If you have a special prescription, see your optician.  (Measure the 
   distance from the bridge of your nose to your computer screen and take 
   that measurement with you.)
   
Dan Covill, SCG