Why do two people see differently with the same prescription?

#14 06-08-2008, 05:03 PM

On Jun 8, 12:49*pm, "Anna via MedKB.com" <u36039[at]uwe> wrote:
- quote -

> We tried an unsophisticated test of sorts and he could definately see better
> than me without glasses.
> I still can't reckon that someone with a prescription that's actually more
> than mine has better vision. Neither can he. Is there somewhere we can look
> (ie on the internet) to understand why?

Best corrected acuity (how well you see with glasses) is not related
to your prescription. It depends on personal anatomical factors like
the spacing of rods and cones in your retina, spacing and
distribution of neural cells in the retina, speed and efficiency of
the neural tracts in the visual tracks of your brain, aberrations in
the optical pathway through the eye and size of pupil. It also
depends upon perceptual factors that influence how readily one will
guess and ability to recognize familiar and unfamilar objects.
Finally, any disease affecting the optical path through the eye or the
visual neural track will also affect BCA.

Uncorrected acuty (how well you see without glasses) has some relation
to prescription in that much larger prescriptions will have worse
acuity, but for prescriptions that are not much different, the factors
affecting best corrrected acuity play a bigger role. You and your
boyfriend have similar prescriptions, so those other factors have more
to do with your comparitive vision than your relative prescriptions.

Think of this way: two people with the same shoe size will not run
equally fast.

Thanks

#13 06-08-2008, 04:56 PM

On 8 Jun, 17:49, "Anna via MedKB.com" <u36039[at]uwe> wrote:
- quote -

> We tried an unsophisticated test of sorts and he could definately see better
> than me without glasses.
> I still can't reckon that someone with a prescription that's actually more
> than mine has better vision. Neither can he. Is there somewhere we can look
> (ie on the internet) to understand why?
> Thanks
> --
> Message posted via MedKB.comhttp://www.medkb.com/Uwe/Forums.aspx/vision/200806/1

Look up "Bates"

#12 06-08-2008, 04:49 PM

We tried an unsophisticated test of sorts and he could definately see better
than me without glasses.
I still can't reckon that someone with a prescription that's actually more
than mine has better vision. Neither can he. Is there somewhere we can look
(ie on the internet) to understand why?
Thanks

--
Message posted via MedKB.com
http://www.medkb.com/Uwe/Forums.aspx/vision/200806/1

#11 06-04-2008, 02:27 AM

On Jun 3, 9:39*am, Zetsu <absolutelyinvinci...[at]hotmail.com> wrote:
- quote -

> What are turds ?

You really are retarded, aren't you?

#10 06-03-2008, 01:39 PM

What are turds ?

#9 06-02-2008, 10:12 PM

"Zetsu" <absolutelyinvincible[at]hotmail.com> wrote

- quote -

> You can't "destroy" a forum. You can only destroy yourself.

Well, leaving turds in a public swimming pool doesn't actually "destroy"
anything, does it.

-MT

#8 06-02-2008, 03:32 AM

On 2 Jun, 02:50, "John Hasenkam" <jo...[at]goawayplease.com> wrote:
- quote -

> "Mike Tyner" <mty...[at]mindspring.com> wrote in message
> news:C5WdnQTwxsFZSd_VnZ2dnUVZ_vKdnZ2d[at]giganews.com...
> > "John Hasenkam" <jo...[at]goawayplease.com> wrote in message
> > > Some research from the Uni of Qld looked at this question of myopia and
> > > the impact of glasses. They had some subjects with mild myopia go without
> > > their glasses for a period of time because it is known the slight
> > > improvements in vision can occur. What they found was that there was no
> > > change in accommodation but rather the improvement appeared to arise from
> > > improved V6(?) function - ie; neocortical adjustment. The improvement is
> > > minor and not a cure.
> > More startling neurological adaptations occur, but there are limits.
> > Can't help it, sorry. Bates and Zetus both push my buttons.
> > -MT
> This is one of the few forums left on the net where good professionals give
> good advice to the general public. So keep attacking them Mike because
> people like them destroy the credibility and usefulness of forums. For
> example, I was very perplexed as to why the sleep mask helped solved a
> chronic and disabiling vision issue for me, never sure if it was just
> co-incidence but confident it was corneal related. Your reply to my post on
> that matter gave me comfort. Indeed you were the first professional (I've
> seen 3 or 4 since the problem started) that could proffer a plausible
> explanation for this effect.
> In Internet World there is a cure for everything, a solution to every
> problem, and conspiracies abound. Some of my favourite forums have been
> destroyed by nutters.

You can't "destroy" a forum. You can only destroy yourself.

#7 06-02-2008, 03:11 AM

On Jun 1, 6:50 pm, "John Hasenkam" <jo...[at]goawayplease.com> wrote:
- quote -

> "Mike Tyner" <mty...[at]mindspring.com> wrote in message
> news:C5WdnQTwxsFZSd_VnZ2dnUVZ_vKdnZ2d[at]giganews.com...
> > "John Hasenkam" <jo...[at]goawayplease.com> wrote in message
> > > Some research from the Uni of Qld looked at this question of myopia and
> > > the impact of glasses. They had some subjects with mild myopia go without
> > > their glasses for a period of time because it is known the slight
> > > improvements in vision can occur. What they found was that there was no
> > > change in accommodation but rather the improvement appeared to arise from
> > > improved V6(?) function - ie; neocortical adjustment. The improvement is
> > > minor and not a cure.
> > More startling neurological adaptations occur, but there are limits.
> > Can't help it, sorry. Bates and Zetus both push my buttons.
> > -MT
> This is one of the few forums left on the net where good professionals give
> good advice to the general public. So keep attacking them Mike because
> people like them destroy the credibility and usefulness of forums. For
> example, I was very perplexed as to why the sleep mask helped solved a
> chronic and disabiling vision issue for me, never sure if it was just
> co-incidence but confident it was corneal related. Your reply to my post on
> that matter gave me comfort. Indeed you were the first professional (I've
> seen 3 or 4 since the problem started) that could proffer a plausible
> explanation for this effect.
> In Internet World there is a cure for everything, a solution to every
> problem, and conspiracies abound. Some of my favourite forums have been
> destroyed by nutters.

Mike is one of the good ones, and ... you are SO right about the rest
of your post :-(

#6 06-02-2008, 01:50 AM

"Mike Tyner" <mtyner[at]mindspring.com> wrote in message
news:C5WdnQTwxsFZSd_VnZ2dnUVZ_vKdnZ2d[at]giganews.com...
- quote -

> "John Hasenkam" <johnh[at]goawayplease.com> wrote in message
> > Some research from the Uni of Qld looked at this question of myopia and
> > the impact of glasses. They had some subjects with mild myopia go without
> > their glasses for a period of time because it is known the slight
> > improvements in vision can occur. What they found was that there was no
> > change in accommodation but rather the improvement appeared to arise from
> > improved V6(?) function - ie; neocortical adjustment. The improvement is
> > minor and not a cure.
> More startling neurological adaptations occur, but there are limits.
> Can't help it, sorry. Bates and Zetus both push my buttons.
> -MT

This is one of the few forums left on the net where good professionals give
good advice to the general public. So keep attacking them Mike because
people like them destroy the credibility and usefulness of forums. For
example, I was very perplexed as to why the sleep mask helped solved a
chronic and disabiling vision issue for me, never sure if it was just
co-incidence but confident it was corneal related. Your reply to my post on
that matter gave me comfort. Indeed you were the first professional (I've
seen 3 or 4 since the problem started) that could proffer a plausible
explanation for this effect.

In Internet World there is a cure for everything, a solution to every
problem, and conspiracies abound. Some of my favourite forums have been
destroyed by nutters.

#5 06-01-2008, 06:32 PM

On May 31, 4:13*pm, "Anna via MedKB.com" <u36039[at]uwe> wrote:
- quote -

> Hello.
> I read that two people with the same prescription might have different
> standards of vision. I have -2 and -2.50 and feel I see badly without them..
> My boyfriend is -2.50 and -2.50 and just wears them to drive. Why is that we
> interpret the same prescription so differently?

Why do two people with the same shoes run differently? Why do two
baseball players with the same bat hit differently? Why do two people
with the same education, same pens and same paper write such different
quality of prose? Why of two people with the same stereo system, one
loves to listen to hip hop and hates opera and the other hates hip hop
and loves opera.

We are all individuals with our own tastes, tolerances, skills and
preferences.

Dr Judy

Similar Threads
Thread	Forum	Replies	Last Post
Some people I'd like to see post here. b_brazilian@hotmail.com: I was thinking about some of the people who made this an interesting NG in the past. Here is a small sample of people I would love to see post here...	Lasik Eye Surgery	9	04-16-2007 06:31 AM
Myopia is an epidemic! More and more people are ruining their eyes! Most people are myopic now! acemanvx@yahoo.com: http://www.optvissci.com/pt/re/ovs/abstract.00006324-200305000-00011.htm;jsessionid=DrjlkbswqMDIQdYQko2USF2wfUpRZ89qeM1ccZMDqydCTxfAY8UJ!-1213525936!-...	Vision	43	12-27-2005 07:27 AM
The lengths people go to wtrattler@earthlink.net: I find it ironic when a group of refractive surgery haters picks on a person who donates their time helping people with questions or problems after...	Lasik Eye Surgery	16	11-29-2005 07:08 AM
Relationship of eyeglass prescription to non-toric contact lens prescription? Remove SPAM From Address to Reply: Here's the situation - my girlfriend recently had her annual checkup, and we decided to have her try the Acuvue-2 contact lenses. Her prescription...	Vision	4	10-06-2004 11:30 PM

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode