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otisbrown@pa.net
medicine forum Guru
Joined: 24 Mar 2005
Posts: 1447
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 Posted: Sun Jun 25, 2006 2:41 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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DrG> You are literally fretting over 0.25 diopter differences, when
the fact
of the matter is that you have been wearing a ten year-old prescription
that is off by a factor of 7!
Otis> I believe that she said she had not worn any "prescription" for
may
years. The result was that her refractive state "improved" and
now here "old" glasses are over-prescribed by a factor of 7 -- as you
say. But...
DrG > SHAME ON YOU. You're not a very compliant patient, are you?
Dicky> (These Dr.s do have their weapons!)
Best,
Otis |
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otisbrown@pa.net
medicine forum Guru
Joined: 24 Mar 2005
Posts: 1447
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| Posted: Sun Jun 25, 2006 2:51 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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Dear Andy,
Subject: Doing your own checking.
You might have "variable accommodation", or even pseudo-myopia.
Perhaps, to "clear the air" you could read your own Snellen.
A nifty chart is on my site as EyeChart #2. (Linked).
Since you seem to be getting various "measurements" -- you
might find you can read the 20/50 to 20/40 line.
(Reading 1/2 the letters "passes" the line.)
It never hurts to check.
Best,
Otis |
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otisbrown@pa.net
medicine forum Guru
Joined: 24 Mar 2005
Posts: 1447
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| Posted: Sun Jun 25, 2006 2:53 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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Andy, the web site is:
www.myopiafree.com
Enjoy,
Otis |
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Dick Adams
medicine forum Guru
Joined: 12 Oct 2005
Posts: 300
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| Posted: Sun Jun 25, 2006 2:58 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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"Mike Tyner" <mtyner@mindspring.com> wrote in message news:1I6dnaOjTJdudwDZnZ2dnUVZ_ridnZ2d@giganews.com...
| Quote: | "Dick Adams" <bad.addr@nonexist.com> wrote
That is why it is good to have a -0.25D and a -0.50D test lens. Sit with
those, in your car (at night) on a city street, and hold them before each
lens in your new eyeglasses. You will find the best (-) addition for
reading signs and seeing the fluorescent displays the most sharply.
With those two lenses, you can achieve up to -0.75D addition.
With this technique, without careful coaching, many people choose -050
or -075 more than they really need.
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Well, it seems really doubtful that many people have even considered doing
such a thing. But I would presume that anyone smart enough to figure out
how to get the test lenses, and the right ones, would be smart enough to
avoid overcorrection.
Of course, you could argue that most people do not need to read signs
when they drive at night. That might even be your Professional Opinion.
You do not have to see very well in order to get licensed to drive, so it
could be considered just an arbitrary preference to want to read signs.
--
Dicky |
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Mike Tyner
medicine forum Guru
Joined: 24 Mar 2005
Posts: 1299
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| Posted: Sun Jun 25, 2006 4:00 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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"Dick Adams" <bad.addr@nonexist.com> wrote
| Quote: | Well, it seems really doubtful that many people have even considered doing
such a thing. But I would presume that anyone smart enough to figure out
how to get the test lenses, and the right ones, would be smart enough to
avoid overcorrection.
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You might think so.
| Quote: | Of course, you could argue that most people do not need to read signs
when they drive at night. That might even be your Professional Opinion.
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No it's Otis who recommends undercorrection.
| Quote: | You do not have to see very well in order to get licensed to drive, so it
could be considered just an arbitrary preference to want to read signs.
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Overcorrection gives an illusion of "crispness" without improving measured
acuity. At least that's the definition I use.
-MT |
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otisbrown@pa.net
medicine forum Guru
Joined: 24 Mar 2005
Posts: 1447
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| Posted: Sun Jun 25, 2006 4:07 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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Dear Dicky,
Subject: "Prescribing" -- under YOUR control.
I wonder what would be the result if you did what you say --
self-prescribe.
Would you over-prescribe -- or would you be more likely to get your
Snellen and minus "just right".
It is true that a night, you would tend to over-prescribe youself --
but
I wonder by how much.
What I suggest is that (as a base-line) you verify you pass the DMV --
and
then go down and do it -- for final confirmation.
Now, if you wish a stronger minus -- well, as you said, Dicky, you
can just order some -0.75 diopters from Zenni.
Workable?
Best,
Otis
| Quote: |
"Dick Adams" <bad.addr@nonexist.com> wrote
That is why it is good to have a -0.25D and a -0.50D test lens. Sit with
those, in your car (at night) on a city street, and hold them before each
lens in your new eyeglasses. You will find the best (-) addition for
reading signs and seeing the fluorescent displays the most sharply.
With those two lenses, you can achieve up to -0.75D addition.
With this technique, without careful coaching, many people choose -050
or -075 more than they really need.
Well, it seems really doubtful that many people have even considered doing
such a thing. But I would presume that anyone smart enough to figure out
how to get the test lenses, and the right ones, would be smart enough to
avoid overcorrection.
Of course, you could argue that most people do not need to read signs
when they drive at night. That might even be your Professional Opinion.
You do not have to see very well in order to get licensed to drive, so it
could be considered just an arbitrary preference to want to read signs.
--
Dicky |
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Neil Brooks
medicine forum Guru
Joined: 24 Mar 2005
Posts: 1148
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| Posted: Sun Jun 25, 2006 5:33 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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On 24 Jun 2006 19:53:59 -0700, "otisbrown@pa.net" <otisbrown@pa.net>
wrote:
Wear your hip waders.
The BS runs pret-ty deep in there.... |
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A Lieberman
medicine forum Guru Wannabe
Joined: 30 Apr 2005
Posts: 194
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| Posted: Mon Jun 26, 2006 12:05 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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On 24 Jun 2006 19:51:34 -0700, otisbrown@pa.net wrote:
| Quote: | Dear Andy,
Subject: Doing your own checking.
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Dear Andy,
Please disregard Otis's postings. He is not in the medical profession nor
in any position to give medical advice.
Thank you!
Allen |
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privacy_101@hotmail.com
medicine forum beginner
Joined: 22 Jun 2006
Posts: 6
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| Posted: Wed Jun 28, 2006 2:22 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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Guys,
All I want to know is:
Since Prescriptions A and C gave powers of 0.00, and -0.75, I need to
pick between Prescriptions B and D, -0.25, and -0.50.
The slightly weaker prescription -0.25 (which implies on the day my
vision was better?), or the slightly stronger power -0.50 (which is
closer to my 10 year old prescription of -1.75). Even if I 'preferred'
the -0.50, this could just mean my eyes 'prefer more minus' as someone
said. Therefore I should go for the weaker -.0.25, which would help
improve my eyesight because they may be slightly underpowered.
Which would be a better choice for this 41 year old, for driving and
movies?
Given their similarity, should i go for -0.25, or -0.50?
Andy |
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Dr. Leukoma
medicine forum Guru
Joined: 30 Apr 2005
Posts: 1283
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| Posted: Wed Jun 28, 2006 2:36 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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privacy_101@hotmail.com wrote:
| Quote: | Guys,
All I want to know is:
Since Prescriptions A and C gave powers of 0.00, and -0.75, I need to
pick between Prescriptions B and D, -0.25, and -0.50.
The slightly weaker prescription -0.25 (which implies on the day my
vision was better?), or the slightly stronger power -0.50 (which is
closer to my 10 year old prescription of -1.75). Even if I 'preferred'
the -0.50, this could just mean my eyes 'prefer more minus' as someone
said. Therefore I should go for the weaker -.0.25, which would help
improve my eyesight because they may be slightly underpowered.
Which would be a better choice for this 41 year old, for driving and
movies?
Given their similarity, should i go for -0.25, or -0.50?
Andy
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Yes.
DrG |
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CatmanX
medicine forum Guru
Joined: 17 May 2005
Posts: 367
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| Posted: Wed Jun 28, 2006 5:33 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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You could go for option E and F too. Or maybe X, Y or Z?
Pick one optom and get them to sort it out.
If you came into my office and started reeling off other peoples
scripts, I would show you the door. WTF do you want? If you want the
right glasses then ask me for help and I will sort it out. If you want
to compare scripts, then go elsewhere.
The problem sounds like you are an active accommodator (you can read
this as anal retentive with some patients) and want to accommodate and
don't want to relax your focus. Thus all the scripts are correct at the
time of each test and you need help.
Like I said, pick one guy and let him work it out, it is his job after
all.
dr grant |
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privacy_101@hotmail.com
medicine forum beginner
Joined: 22 Jun 2006
Posts: 6
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| Posted: Wed Jun 28, 2006 6:04 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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| Quote: | Like I said, pick one guy and let him work it out, it is his job after
all.
dr grant
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Cool. Which one?
Andy |
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JohnDoe
medicine forum Guru
Joined: 14 Jun 2005
Posts: 364
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| Posted: Wed Jun 28, 2006 11:35 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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privacy_101@hotmail.com wrote:
| Quote: | Guys,
All I want to know is:
Since Prescriptions A and C gave powers of 0.00, and -0.75, I need to
pick between Prescriptions B and D, -0.25, and -0.50.
The slightly weaker prescription -0.25 (which implies on the day my
vision was better?), or the slightly stronger power -0.50 (which is
closer to my 10 year old prescription of -1.75). Even if I 'preferred'
the -0.50, this could just mean my eyes 'prefer more minus' as someone
said. Therefore I should go for the weaker -.0.25, which would help
improve my eyesight because they may be slightly underpowered.
Which would be a better choice for this 41 year old, for driving and
movies?
Given their similarity, should i go for -0.25, or -0.50?
Andy
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Get the -0.50 - better for distance vision, especially at night.
Getting the -0.25 will not help improve your eyesight.
Dom |
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CatmanX
medicine forum Guru
Joined: 17 May 2005
Posts: 367
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| Posted: Wed Jun 28, 2006 9:37 pm Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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Which ever one you like. Generally the one you feel most comfortable
with.
dr grant |
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privacy_101@hotmail.com
medicine forum beginner
Joined: 22 Jun 2006
Posts: 6
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| Posted: Fri Jun 30, 2006 2:45 am Post subject:
Re: Help: 3 Optometrists + 1 eye specialist = 4 different prescriptions!
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Dom wrote:
| Quote: | privacy_101@hotmail.com wrote:
Guys,
All I want to know is:
Since Prescriptions A and C gave powers of 0.00, and -0.75, I need to
pick between Prescriptions B and D, -0.25, and -0.50.
The slightly weaker prescription -0.25 (which implies on the day my
vision was better?), or the slightly stronger power -0.50 (which is
closer to my 10 year old prescription of -1.75). Even if I 'preferred'
the -0.50, this could just mean my eyes 'prefer more minus' as someone
said. Therefore I should go for the weaker -.0.25, which would help
improve my eyesight because they may be slightly underpowered.
Which would be a better choice for this 41 year old, for driving and
movies?
Given their similarity, should i go for -0.25, or -0.50?
Andy
Get the -0.50 - better for distance vision, especially at night.
Getting the -0.25 will not help improve your eyesight.
Dom
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Thanks.
I suppose even if prescriptions with more minus than necessary DO
'weaken' the eye, wearing glasses only for driving and movies, would
negate that effect anyway.
Andy |
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