Can acuity be 'too' sharp?

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SerenaK - 08 Jul 2007 12:10 GMT

I am trying soft toric lenses (-75) due to slight astigmatism in both eyes
(-50), after not experiencing really clear vision with spherical. I was
amazed at the sharpness of my intermediate and distance vision with the
torics and at the risk of asking a crazy question, wondered if it's possible
for acuity to be TOO sharp. Is there any risk of eye strain or headaches or
should I just enjoy the feeling of being able to see really clearly? Is it
preferable to achieve vision that is slightly 'softer' in sharpness?

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michael toulch - 08 Jul 2007 18:18 GMT

> I am trying soft toric lenses (-75) due to slight astigmatism in both eyes
> (-50), after not experiencing really clear vision with spherical. I was
[quoted text clipped - 3 lines]
> should I just enjoy the feeling of being able to see really clearly? Is it
> preferable to achieve vision that is slightly 'softer' in sharpness?

do you feel eyestrain or have headaches?
is the close reading vision sharp as well?

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SerenaK - 08 Jul 2007 23:39 GMT

> > I am trying soft toric lenses (-75) due to slight astigmatism in both eyes
> > (-50), after not experiencing really clear vision with spherical. I was
[quoted text clipped - 6 lines]
> do you feel eyestrain or have headaches?
> is the close reading vision sharp as well?

I have to test them further for a longer duration. I don't need glasses for
close reading vision, but I did notice that reading is slightly more
difficult with these than with the spherical lenses I tried.

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callimico66@yahoo.com - 08 Jul 2007 23:54 GMT

> Is there any risk of eye strain or headaches or
> should I just enjoy the feeling of being able to see really clearly? Is it
> preferable to achieve vision that is slightly 'softer' in sharpness?

It is probably more of a personal preference, and depends how you use
your eyes (whether mainly for near, or mid-distance, far).

I have a preference for "softer" vision when I spend most of my time
in doors. Wearing strong correction around the house used to give me
headaches----before I became presbyopic. When I hike or drive, I
prefer sharper vision.

I think there's a difference between being "over-corrected" (too
sharp), and having your vision corrected "accurately" (as in clearing
up the astigmatism). Don't worry about "risk."

C

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SerenaK - 10 Jul 2007 05:25 GMT

> It is probably more of a personal preference, and depends how you use
> your eyes (whether mainly for near, or mid-distance, far).
[quoted text clipped - 7 lines]
> sharp), and having your vision corrected "accurately" (as in clearing
> up the astigmatism). Don't worry about "risk."

Thanks for your response! Like you, I enjoyed the sharpness while out, but
think it might bother me at home.

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Mike Ruskai - 09 Jul 2007 08:39 GMT

>I am trying soft toric lenses (-75) due to slight astigmatism in both eyes
>(-50), after not experiencing really clear vision with spherical. I was
[quoted text clipped - 3 lines]
>should I just enjoy the feeling of being able to see really clearly? Is it
>preferable to achieve vision that is slightly 'softer' in sharpness?

There's no risk of any kind of damage, but if it's overcorrected,
you'll be accomodating at all times, which may tire your eyes out
after a while.

If you find that's the case, just ask the eye doc to lower the
spherical correction by 0.25.

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- Mike

Ignore the Python in me to send e-mail.

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SerenaK - 10 Jul 2007 05:27 GMT

"Mike Ruskai" <BUTthannydI@DONTearthlinkLIKE.netSPAM> wrote >

> There's no risk of any kind of damage, but if it's overcorrected,
> you'll be accomodating at all times, which may tire your eyes out
> after a while.
>
> If you find that's the case, just ask the eye doc to lower the
> spherical correction by 0.25.

Thanks for your reply! I might suggest that to the eye doctor.

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