I've been wearing the same pair of prescription glasses for the past 5
years and have noticed no real significant changes in that time. When
examined by an O.D. in December 2001 I was prescribed the following
which I still wear to this day:

SPH. CYL. AXIS
O.D. -225 -75 105
O.S. -250 -75 095

In December 2005 I went to a different O.D. for a way overdue exam. He
prescribed:

SPH. CYL. AXIS
O.D. -2.50 -1.25 095
O.S. -2.50 -1.00 085

This doctor told me that the changes were pretty minor and that I
would only notice a slight difference. So I passed on getting new
lenses at that time.

Then 7 months later, in July 2006 I was exposed to a fiber optic cable
at work. My co-worker plugged in the other end of the cable while I
was removing the protective covering on the other end. At most I was
exposed for maybe a second or two and wasn't seeing spots or anything
so I figured there was no damage. I did however go to an M.D. for a
precautionary exam and thankfully there was no damage done. At that
same time I also asked the doctor for an eye exam. This doctor
prescribed:

SPH. CYL. AXIS
O.D. -350 1.00 15
O.S. -375 1.25 04

Now I'll admit I have no clue as to what these numbers mean but this
third prescription just looks way out of line considering I haven't
noticed any major changes in my vision even with 5 year old glasses.
Is this kind of change possible within the span of only 7 months from
the previous exam?

Also, I've been recently shopping around for a new pair of glasses
that are preferably frameless. At a few places where I've shown my
latest prescription I have been told that it is a pretty high
prescription and that the thickness of the lenses may be a problem for
frameless glasses.

So do I trust the prescription by the M.D. or should I just go back to
an O.D. and get another exam?

Thanks

I've been wearing the same pair of prescription glasses for the past 5
years and have noticed no real significant changes in that time. When
examined by an O.D. in December 2001 I was prescribed the following
which I still wear to this day:

SPH. CYL. AXIS
O.D. -225 -75 105
O.S. -250 -75 095

In December 2005 I went to a different O.D. for a way overdue exam. He
prescribed:

SPH. CYL. AXIS
O.D. -2.50 -1.25 095
O.S. -2.50 -1.00 085

This doctor told me that the changes were pretty minor and that I
would only notice a slight difference. So I passed on getting new
lenses at that time.

Then 7 months later, in July 2006 I was exposed to a fiber optic cable
at work. My co-worker plugged in the other end of the cable while I
was removing the protective covering on the other end. At most I was
exposed for maybe a second or two and wasn't seeing spots or anything
so I figured there was no damage. I did however go to an M.D. for a
precautionary exam and thankfully there was no damage done. At that
same time I also asked the doctor for an eye exam. This doctor
prescribed:

SPH. CYL. AXIS
O.D. -350 1.00 15
O.S. -375 1.25 04

Now I'll admit I have no clue as to what these numbers mean but this
third prescription just looks way out of line considering I haven't
noticed any major changes in my vision even with 5 year old glasses.
Is this kind of change possible within the span of only 7 months from
the previous exam?

Also, I've been recently shopping around for a new pair of glasses
that are preferably frameless. At a few places where I've shown my
latest prescription I have been told that it is a pretty high
prescription and that the thickness of the lenses may be a problem for
frameless glasses.

So do I trust the prescription by the M.D. or should I just go back to
an O.D. and get another exam?

Thanks

Now I'll admit I have no clue as to what these numbers mean but this
third prescription just looks way out of line considering I haven't
noticed any major changes in my vision even with 5 year old glasses.
Is this kind of change possible within the span of only 7 months from
the previous exam?

Also, I've been recently shopping around for a new pair of glasses
that are preferably frameless. At a few places where I've shown my
latest prescription I have been told that it is a pretty high
prescription and that the thickness of the lenses may be a problem for
frameless glasses.

So do I trust the prescription by the M.D. or should I just go back to
an O.D. and get another exam?

As an eyeglasses wearer I would agree that's a pretty big prescription

As an eyeglasses wearer I would agree that's a pretty big prescription
change. If it were me I'd want to make sure it was correct before investing
in new lenses and frames.

O.D. -350 1.00 15

O.D. -350 1.00 15
O.S. -375 1.25 04

The above, which is written in + cyl format, translates directly to

R. -2.50 -1.00 x 105
L. -2.50 -1.25 x 94

which is not so much different from either of the o.d. Rxs:

SPH. CYL. AXIS
O.D. -225 -75 105
O.S. -250 -75 095

In December 2005 I went to a different O.D. for a way overdue exam. He
prescribed:

SPH. CYL. AXIS
O.D. -2.50 -1.25 095
O.S. -2.50 -1.00 085

I've been wearing the same pair of prescription glasses for the past 5
years and have noticed no real significant changes in that time. When
examined by an O.D. in December 2001 I was prescribed the following
which I still wear to this day:

SPH. CYL. AXIS
O.D. -225 -75 105
O.S. -250 -75 095

In December 2005 I went to a different O.D. for a way overdue exam. He
prescribed:

SPH. CYL. AXIS
O.D. -2.50 -1.25 095
O.S. -2.50 -1.00 085

This doctor told me that the changes were pretty minor and that I
would only notice a slight difference. So I passed on getting new
lenses at that time.

Then 7 months later, in July 2006 I was exposed to a fiber optic cable
at work. My co-worker plugged in the other end of the cable while I
was removing the protective covering on the other end. At most I was
exposed for maybe a second or two and wasn't seeing spots or anything
so I figured there was no damage. I did however go to an M.D. for a
precautionary exam and thankfully there was no damage done. At that
same time I also asked the doctor for an eye exam. This doctor
prescribed:

SPH. CYL. AXIS
O.D. -350 1.00 15
O.S. -375 1.25 04

Now I'll admit I have no clue as to what these numbers mean but this
third prescription just looks way out of line considering I haven't
noticed any major changes in my vision even with 5 year old glasses.
Is this kind of change possible within the span of only 7 months from
the previous exam?

For some reason, probably historical, ODs write prescriptions with minus
cylinder, and MDs write them with positive. There is an easy
translation which somebody else already posted. If you have this
filled, make sure the optician understands that it was written by an MD.

Dan Abel wrote:


For some reason, probably historical, ODs write prescriptions with minus
cylinder, and MDs write them with positive. There is an easy
translation which somebody else already posted. If you have this
filled, make sure the optician understands that it was written by an MD.

Almost, but not quite.

prescription with plus cyl and my glasses prescription with minus is
beyond me.

Dan Abel wrote:
Why my old OD wrote my contact lens
prescription with plus cyl and my glasses prescription with minus is
beyond me.

Now there's a mystery, since no CLs that I know of are specified that
way. The only thing I can think of he has an old +cyl refractor in his
CL exam room and is too lazy to do the conversion...

I was mistaken. The box says the power is +1.75 and the cyl is -1.75.
I am plano in both eyes, so I don't know what that means.

I was mistaken. The box says the power is +1.75 and the cyl is -1.75.
I am plano in both eyes, so I don't know what that means.

It means the contact lens will have a power of +1.75 along whatever axis
is specified, and 0.00 along the meridian that is at right angle to the
axis. If you are 0.00 in both eyes with no astigmatism, these contact
lenses are not yours, and I'd wonder why you have contacts at all.

O.D. -350 1.00 15
O.S. -375 1.25 04

The above, which is written in + cyl format, translates directly to

R. -2.50 -1.00 x 105
L. -2.50 -1.25 x 94

which is not so much different from either of the o.d. Rxs:

SPH. CYL. AXIS
O.D. -225 -75 105
O.S. -250 -75 095

In December 2005 I went to a different O.D. for a way overdue exam. He
prescribed:

SPH. CYL. AXIS
O.D. -2.50 -1.25 095
O.S. -2.50 -1.00 085

In article <9gyoh.14412$yC5.3976@newssvr27.news.prodigy.net>,
"William Stacy, O.D." <wstacy@obase.net> wrote:


I was mistaken. The box says the power is +1.75 and the cyl is -1.75.
I am plano in both eyes, so I don't know what that means.

It means the contact lens will have a power of +1.75 along whatever axis
is specified, and 0.00 along the meridian that is at right angle to the
axis. If you are 0.00 in both eyes with no astigmatism, these contact
lenses are not yours, and I'd wonder why you have contacts at all.


I have astigmatism. Here is my prescription from last October:

OD +.25 +1.50 130
OS PL +.25 60

add of 2.25