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Medical Forum / General / Vision / September 2007

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Contact Lense Prescription problem

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true2rue@gmail.com - 08 Sep 2007 20:49 GMT
Hello,
    I recently went to the eye doctor and got a prescription for
glasses and contact lenses. My first appointment, he gave me my
glasses prescription which was:

OD: Sphere -1.75
OS: Sphere -2.00 Cylinder -1.00 Axis 172
    He gave me a trial pair of contacts to try out after this first
appointment and said he would give me my contact prescription a week
later when I came in. The contacts seemed fine that first week.

   I received my glasses and they worked perfectly. Then I went back
the following week and the contact prescription he gave me read as
follows:

OD: BC 8.60 Diameter 14.00 Sphere -1.75
OS: BC 8.70 Diameter 14.00 Sphere -2.00 Cylinder -0.75 Axis 010

I didn't have my glasses prescription in front of me when he gave me
the contacts prescription so I didn't know to ask the difference in
the axis as I ordered the lenses from his office. A week later I
received the prescribed contacts and noticed that my OS(left eye), the
one with astigmatism was not as sharp as my right eye and the left eye
contact doesn't seem to fit as well as the right. It is as sharp as my
right eye with my regular glasses. My question is, did he make a
mistake changing the cylinder number and axis number when he gave me
the contacts prescription?  Any help would greatly be appreciated,
thank you.
          -patrick devlin
Dr Judy - 08 Sep 2007 21:58 GMT
On Sep 8, 3:49 pm, true2...@gmail.com wrote:
> Hello,
>      I recently went to the eye doctor and got a prescription for
[quoted text clipped - 25 lines]
> thank you.
>            -patrick devlin

The contact lens prescription is based on how the lens fits the eye,
the actual measured over refraction and, in the case of torics, the
axis is determined by the rotation of the lens on the eye.  If you are
not happy with the vision, return to the fitter.  You should know that
it is more difficult to get a toric (astigmatism correcting) lens to
deliver good vision and not uncommon for the spherical lens to be
clearer than the toric.

Dr Judy
p.clarkii@gmail.com - 09 Sep 2007 06:25 GMT
On Sep 8, 3:49 pm, true2...@gmail.com wrote:
> Hello,
>      I recently went to the eye doctor and got a prescription for
[quoted text clipped - 25 lines]
> thank you.
>            -patrick devlin

sounds like the examination when entirely appropriately.  that's
exactly the same work flow that many optometrists use:  examination
concluding with dispensing trial contacts, and a follow-up appointment
a short time latter to give you time to assess your vision and the
comfort of the lenses.  the exact figures he wrote on the prescription
for contacts is quite reasonable.  The left toric lens prescription
also looks entirely reasonable for those types of lenses.  Oftentimes
they sit on the corneal slightly rotated as compared to the
prescription measured during the exam on the phoropter-- adjusting the
axis measurement on the contact lens to approximately 10 degrees would
likely compensate for that rotation.

fret not.  all is well.
lena102938 - 09 Sep 2007 06:42 GMT
On Sep 9, 12:25 am, p.clar...@gmail.com wrote:
> On Sep 8, 3:49 pm, true2...@gmail.com wrote:
>
[quoted text clipped - 41 lines]
>
> fret not.  all is well.

Excuse , me please are you OD ?
Neil Brooks - 09 Sep 2007 16:31 GMT
> Excuse , me please are you OD ?

Excuse , me please. are you OCD?

Thanks.

[don't be afraid to search the archives Lena.  Actual inquiry,
exploration, investigation, and experimentation ARE a universal good
thing ... EVEN WHEN they refute your closely-held beliefs.]
p.clarkii@gmail.com - 09 Sep 2007 17:17 GMT
> On Sep 9, 12:25 am, p.clar...@gmail.com wrote:
>
[quoted text clipped - 45 lines]
>
> Excuse , me please are you OD ?

i am many things.  and yes, I am an OD.
 
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