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#11
03-06-2012, 06:31 PM
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I figure another pair of glasses is cheaper than a HD projector! LOL
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#13
03-06-2012, 08:51 PM
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Quote:
A prescription is broken down into parts like this Sph cyl axis prism add Sphere is - or + optical diopter which come in increments of 0.25 The symbol + or - means you lenses are either concave or convex, longsighted or shortsighted... Cylinder is due to the shape of the eye not being a perfect sphere and is where present always has an axis. Prism is serious stuff, I dont think I need to explain. You will know if you have prism in your Rx and will definatley need Rx lenses. add is addition, this is what the optician literally adds to your Rx (perscription) to make your standed glasses reading glasses... If you have no prism, and little cylinder 0.25 or less and your sphere is fairly balanced equal on both sides by around 0.50 you dont need to buy intermedite specs from an optician... You could buy some ready readers of a weaker perscription than the combination of your sphere and add... Obviously, if you get any eyestrain or tired eyes you have either got the wrong strength and or you will want to see you optician and get some perscription glasses... Also the addition and shphere is worked out differently if you have a +cylinder, the perscription has to be transposed and it affects the outcome, I only worked in -cylinder... I do not know the formula. I would get in front of your computer first and measure the difference then replicate that distance when sampling the ready readers in store... I am not an optician - you do this off your own back. 
Last edited by 5./JG27.Farber; 03-06-2012 at 09:02 PM.
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#15
03-06-2012, 09:01 PM
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Quote:
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#17
03-07-2012, 07:11 AM
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I only got my first pair a year or so ago to help focus on 1mm increments on a ruler that I needed to use for picture framing. Two years down the track and now I can't read a phone book or newspaper without them. Always thought this rapid decline once you start wearing glasses was due to an international conspiracy of optometrists, but have been assured by everyone it is normal as the years go by. Isn't being over forty great!
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#18
03-07-2012, 09:25 AM
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Carrots, my friends. Carrots. They helped the Brits virtually beat the Nazis in the skies over Dover, and they'll help you in the virtual skies too.
SIGH! Been looking to go this way too. I have a pair of narrow lenses to help defeat the ugly look of large lenses with astigmatism. They need to be thick on the edges because of the curvature of the iris and glass lens. I use narrow oframes that are not only lighter, but much more attractive (I need all the help I can get). So it's not like I can get a nice pair of glasses with bifocals. The INVISO eye line bifocals are almost useless to me because the band that allows me to read is so small that I'd need a joint for a neck so I could lean back enough for that part to be effective. Gawd what an ugly word bifocals is. Wearing a pair for the first time is almost as bad as when your waist gets to be larger than your pants inseam. You just know you'll never see that part of youth again. SIGH! Shuddap and eat your carrots!
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#19
03-07-2012, 09:33 AM
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Sad but true.
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#20
03-07-2012, 10:22 AM
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I have worn glasses for years, and still hate them with a passion. I also need prisms, which means I can't wear contacts full time.
My latest visit to the opticians a couple of weeks ago resulted in bifocals being mentioned in the next couple of years... I feel old. Using a good quality 32" led TV helps a lot with games though.
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