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michael.b.taylor@gmail.co
medicine forum beginner
Joined: 09 Jun 2006
Posts: 1
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 Posted: Fri Jun 09, 2006 11:17 pm Post subject:
contacts versus eyeglasses prescription
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Hello,
I recently went to an eye center to get contact lens and an eyeglass
prescription. The eyeglass prescription was:
RE: -2.50 +0.25 145 (sph/cyl/axis)
LE: -2.50 +1.25 020
However, when I went to get my contacts prescription, they gave me two
lenses with a different prescription. The left lens is a toric lens.
The right lens is non-toric. I noticed when looking at the exterior
packaging of the contact lens that the prescription for one of the lens
was -1.25 and the other was -2.25. Thus, I believe the non-toric lense
appears to be substantially weaker.
I noticed almost right way that vision through the right lens is fairly
blurry. However, they pushed me out the door without addressing this
issue, and they're rmaking it hard to reschedule, claiming that your
vision can be blurry to start with anyways. However, I find it hard to
believe that the difference between the eyeglass and contact lens
prescription could vary so greatly: -1.25 versus -2.50. Also, my eyes
do not seem to be watering or reacting to the lense.
Is it normal for there to be such a great difference? Should I push to
reschedule?
M |
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Anon E. Muss
medicine forum Guru Wannabe
Joined: 22 May 2006
Posts: 136
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| Posted: Sat Jun 10, 2006 12:03 am Post subject:
Re: contacts versus eyeglasses prescription
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On 9 Jun 2006 16:17:09 -0700, michael.b.taylor@gmail.com wrote:
| Quote: | I recently went to an eye center to get contact lens and an eyeglass
prescription. The eyeglass prescription was:
RE: -2.50 +0.25 145 (sph/cyl/axis)
LE: -2.50 +1.25 020
However, when I went to get my contacts prescription, they gave me two
lenses with a different prescription. The left lens is a toric lens.
The right lens is non-toric. I noticed when looking at the exterior
packaging of the contact lens that the prescription for one of the lens
was -1.25 and the other was -2.25. Thus, I believe the non-toric lense
appears to be substantially weaker.
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If your right contact lens is a -1.25 sphere (i.e., not toric), then
you (probably) were given the wrong prescription.
| Quote: | I noticed almost right way that vision through the right lens is fairly
blurry. However, they pushed me out the door without addressing this
issue, and they're rmaking it hard to reschedule, claiming that your
vision can be blurry to start with anyways.
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Perhaps you got hit with a variation of "Seven, Four, Out The Door"?
[snip]
| Quote: | Is it normal for there to be such a great difference? Should I push to
reschedule?
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Normally, I would tell you to give it at least a few days, but there
is a big enough of an index of suspicion that there is a
non-intentional error in the contacts you were given that I would, at
least, recommend the following:
Walk into the office and tell them your complaint, "Vision is blurry
in the right eye with the contacts." Show them your glasses
prescription, pointing to the RE numbers and then show them your
contact lens prescription and boxes of lenses again pointing to the
-1.25 on the box. Ask them if they accidentally gave you the wrong
contacts.
If they claim all is perfect, I would schedule a follow-up appointment
with the doctor to investigate your complaint. |
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plpfoot@gmail.com
medicine forum beginner
Joined: 18 Mar 2006
Posts: 14
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| Posted: Sat Jun 10, 2006 2:39 am Post subject:
Re: contacts versus eyeglasses prescription
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michael.b.taylor@gmail.com wrote:
| Quote: | Hello,
I recently went to an eye center to get contact lens and an eyeglass
prescription. The eyeglass prescription was:
RE: -2.50 +0.25 145 (sph/cyl/axis)
LE: -2.50 +1.25 020
However, when I went to get my contacts prescription, they gave me two
lenses with a different prescription. The left lens is a toric lens.
The right lens is non-toric. I noticed when looking at the exterior
packaging of the contact lens that the prescription for one of the lens
was -1.25 and the other was -2.25.
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The toric lens would probably have five numbers on it. The -1.25 was
the sphere. Soft contact lenses are written using minus cylinders
making your prescription -1.25 -1.25 x 110. You did not see (or at
least mention in your post) the other numbers. Toric contact lenses
occasionally do not fit well on the initial fitting as they sometimes
do not rotate in the anticipated direction. After a week of wear it is
easier to tell if it is the right lens.
Ted |
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Philip D Izaac
medicine forum addict
Joined: 08 May 2005
Posts: 78
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| Posted: Sat Jun 10, 2006 2:51 am Post subject:
Re: contacts versus eyeglasses prescription
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<michael.b.taylor@gmail.com> wrote in message
news:1149895029.099423.200390@i39g2000cwa.googlegroups.com...
| Quote: | However, when I went to get my contacts prescription, they gave me two
lenses with a different prescription. The left lens is a toric lens.
The right lens is non-toric. I noticed when looking at the exterior
packaging of the contact lens that the prescription for one of the lens
was -1.25 and the other was -2.25. Thus, I believe the non-toric lense
appears to be substantially weaker.
M
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If you convert your prescription to minus cyl. format, it would read:-
R: -2.25/-0.25 X 55
L: -1.25/-1.25 X 110
You did not say what the cylindrical component was for the toric lens.
Leaving out the cylinders of the right lens should cause only very slight
bluring, Are you sure yo did not mix your lenses, that is Right on left and
left on right?
Go back to the Doc to sort it out.
Roland J. Izaac
optometrist |
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LarryDoc
medicine forum Guru Wannabe
Joined: 29 Apr 2005
Posts: 262
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| Posted: Sat Jun 10, 2006 3:01 am Post subject:
Re: contacts versus eyeglasses prescription
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In article <1149907185.021882.128630@y43g2000cwc.googlegroups.com>,
plpfoot@gmail.com wrote:
| Quote: | michael.b.taylor@gmail.com wrote:
Hello,
I recently went to an eye center to get contact lens and an eyeglass
prescription. The eyeglass prescription was:
RE: -2.50 +0.25 145 (sph/cyl/axis)
LE: -2.50 +1.25 020
However, when I went to get my contacts prescription, they gave me two
lenses with a different prescription. The left lens is a toric lens.
The right lens is non-toric. I noticed when looking at the exterior
packaging of the contact lens that the prescription for one of the lens
was -1.25 and the other was -2.25.
The toric lens would probably have five numbers on it. The -1.25 was
the sphere. Soft contact lenses are written using minus cylinders
making your prescription -1.25 -1.25 x 110.
|
That is correct, although it is in fact THREE numbers, not five.
-2.25 for the eye that had a spectacle Rx of -2.50 is certainly
possible.
So, if those are the numbers on the packaging, then you're on the right
track.
| Quote: | Toric contact lenses
occasionally do not fit well on the initial fitting as they sometimes
do not rotate in the anticipated direction. After a week of wear it is
easier to tell if it is the right lens.
|
Ted, it takes but a couple of hours, sometimes as little as a half hour
for the lens to settle and then be able generate a new lens power which
adjusts for the rotation. For a brand new lens wearers, I usually give
it two days *if the first lens is reasonably close* to what I expect.
For most folks, I like to have them back to re-check the powers later
the same day if possible. Things go better for patients, and me 
when they get as close to immediate gratification as possible.
LB O.D. |
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Dr Judy
medicine forum Guru
Joined: 07 May 2005
Posts: 304
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| Posted: Sun Jun 11, 2006 5:06 pm Post subject:
Re: contacts versus eyeglasses prescription
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michael.b.taylor@gmail.com wrote:
| Quote: | Hello,
I recently went to an eye center to get contact lens and an eyeglass
prescription. The eyeglass prescription was:
RE: -2.50 +0.25 145 (sph/cyl/axis)
LE: -2.50 +1.25 020
However, when I went to get my contacts prescription, they gave me two
lenses with a different prescription. The left lens is a toric lens.
The right lens is non-toric. I noticed when looking at the exterior
packaging of the contact lens that the prescription for one of the lens
was -1.25 and the other was -2.25. Thus, I believe the non-toric lense
appears to be substantially weaker.
I noticed almost right way that vision through the right lens is fairly
blurry. However, they pushed me out the door without addressing this
issue, and they're rmaking it hard to reschedule, claiming that your
vision can be blurry to start with anyways. However, I find it hard to
believe that the difference between the eyeglass and contact lens
prescription could vary so greatly: -1.25 versus -2.50. Also, my eyes
do not seem to be watering or reacting to the lense.
Is it normal for there to be such a great difference? Should I push to
reschedule?
|
Your glasses prescription was written in plus cyl form and the contacts
are in minus cyl form. I would guesstimate contact lens powers
required to be:
R -2.25 non toric
L -1.25 toric ( -0.75 or -1.00 or -1.25 cylinder)
If the vision is blurry, return to your fitter. Or its possible you
have reversed left and right, try them the other way.
Dr Judy |
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plpfoot@gmail.com
medicine forum beginner
Joined: 18 Mar 2006
Posts: 14
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| Posted: Fri Jun 16, 2006 3:22 am Post subject:
Re: contacts versus eyeglasses prescription
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| Quote: |
The toric lens would probably have five numbers on it. The -1.25 was
the sphere. Soft contact lenses are written using minus cylinders
making your prescription -1.25 -1.25 x 110.
That is correct, although it is in fact THREE numbers, not five.
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Dear Larry:
Don't neglect the base curve and diameter of the lens. Not all
lenses specify these but you are incorrect, it is in fact FIVE numbers,
not three. Read the label.
Ted. |
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