>First off, I'll like to say thanks
>for this forum. This is a
>great source of information.
You are welcome!
>I'm very near sided (-16 and -
>18) with someastigmatism (1.75 and 2.25).
>I'm 41 years old,and started wearing
>glasses at 4 years old. Ialso
>started wearing hard contact lenses at
>aboutthe same time. My corrected vision
>has never been 20/20. The best
>I've ever gotten is 20/40.I also
>have very poor night vision.
sorry to hear! If this makes you feel better, I also have never corrected to 20/20 even though my eyes arent as bad as yours. Ive been told my best corrected vision is seeing some of the 20/25 line and all of the 20/30 line. My pescription is in the -4 range. No one in my family can be corrected to a full 20/20 either, but all can to 20/25. 20/20 is perfect vision and very hard to achieve.
>I've seen several optometrists and ophthalmologistsover the
>years, and I have asked why
>they can'tcorrect my vision to 20/20,
>but never got a concise answer.
>Some of the reasons suggested are:
>
I couldnt correct to 20/20 either and they said my astigmastim, high order aberrations and glasses minification all keep me from perfect 20/20 correctable.
> * The brain/eye hardware for
>vision forms
>at a very young age. Since
>I was probably
>near sided from a very young
>age (i.e. pre
>4 years old), and was not
>corrected initially,
>my "hardware" isn't quite
> right.
sounds possible. Having never seen what good vision was like, you brain may have never developed percise vision. You never knew what it was like to see great.
> * My eye ball is
>not round, so the retina
> is stretched, and as
>a result there are
> fewer light sensitive nerves per
>square inch. This
>results in a grainer picture
> (like a low resolution
>digital camera).
another reason. Stretched retinas have other problems which disort vision.
> * My night vision is
>poor because the focal
> point of the rods and
>cones are different.
>My corrected vision is based on
>the cones (i.e.
>daylight vision), so at night my
> corrected vision doesn't
>focus on the
>rods (night vision).
Thats in addition to your high order aberrations.
> * My night vision is
>poor because the optics
> of my contact lenses become
>incorrect as my
>iris grows at night. Improperly focused
> light comes in
>at the edges of the contacts.
>
Do you see better at night with glasses?
>Does anyone have any "insight" into this
>issue?
Your glasses minify so your 20/40 may be with RGP contacts while you may see 20/60 with glasses.
>I'm also looking into the Verisyse IOL.
>I've been told I would make
>a good candidate. MyDoctor also thinks
>that it may be possibleto get
>better corrected vision with the IOL.Does
>this sound realistic?
>Thanks,
>......Ken
Id say 20/40 to 20/50 is relistic. Theres some risks with clear lens extraction but itll make your life much easier not to be blind without coke bottle glasses. You may still need a thin pair of bifocals for your astigmastim, any residual myopia and your presbyopia.
