3 Responses to “Is that an "E"?”

1. admin says:

   February 27 at 9:20 pm

   In article <856465668.9…@dejanews.com> patr…@intrepid.net writes:
   >I am really nearsighted. I can just barely see the big E withou
   >my glasses or contacts with my left eye and actually have to
   >walk toward the eyechart to see it with my right eye. Are there
   >many nearsighted people with eyesight this bad? Left 20/400,
   >right 20/600.

   Yes.  There are a lot of us.
   20/400 would take about -3.25 Diopters to correct to 20/20.
   20/600 would take about -3.75 Diopters to correct to 20/20

   I myself need about -6.50 D to correct my right eye to 20/20,
   which is so much that it doesn’t make any sense to try
   to write it in 20/ notation.
   I need about -4.25 D to correct my left eye to 20/20.

   Do you think people with vision this bad could even
   survive in a world without glasses or contact lenses?

   –
   den…@netcom.com (Dennis Yelle)
   "You must do the thing you think you cannot do." — Eleanor Roosevelt
2. admin says:

   February 27 at 9:20 pm

   - Hide quoted text — Show quoted text -

   den…@netcom.com (Dennis Yelle) writes:
   >In article <856465668.9…@dejanews.com> patr…@intrepid.net writes:
   >>I am really nearsighted. I can just barely see the big E withou
   >>my glasses or contacts with my left eye and actually have to
   >>walk toward the eyechart to see it with my right eye. Are there
   >>many nearsighted people with eyesight this bad? Left 20/400,
   >>right 20/600.
   >Yes.  There are a lot of us.
   >20/400 would take about -3.25 Diopters to correct to 20/20.
   >20/600 would take about -3.75 Diopters to correct to 20/20
   >I myself need about -6.50 D to correct my right eye to 20/20,
   >which is so much that it doesn’t make any sense to try
   >to write it in 20/ notation.
   >I need about -4.25 D to correct my left eye to 20/20.
   >Do you think people with vision this bad could even
   >survive in a world without glasses or contact lenses?

   Well, for my final year of high school and my first three years of
   college, my vision was worse than 20/400 in both eyes and
   uncorrectable due to severe corneal edema.  I managed to survive,
   although I’m not saying life was easy.
   

   People with no eyesight at all "manage to survive".
   —
   Dave Mehringer                   California Institute of Technology
   dmehr…@socrates.caltech.edu    Department of Physics
   CSO post-doc/AIPS manager        Pasadena, CA USA
   http://socrates.caltech.edu/~dmehring/dmehring.html
3. admin says:

   February 27 at 9:20 pm

   patr…@intrepid.net wrote:
   >I am really nearsighted. I can just barely see the big E withou
   >my glasses or contacts with my left eye and actually have to
   >walk toward the eyechart to see it with my right eye.

   ……………

   BTW, I believe they use an ‘E’ because they’re proud of that grade
   they got in school — "Incomplete".