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Medical Forum / General / Vision / September 2007

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Maximum eyeglass prescription?

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Lee - 16 Sep 2007 03:26 GMT
I am 33 years old with progressive lenses which, by some sites,
shouldn't happen until I'm in my 40's. I was put in progressives last
year when I was told that I have issues with accomodation and
presbyopia. This is in addition to my extreme nearsightedness and
astigmatism. I have had a drastic change in my prescription from last
year and it just had me wondering if there is a maximum strength for
eyeglass prescriptions? And if so, what is that amount?

I don't have my prescription with me but I know that my eyes are -6.5
and -6.75 with about a +2.0 for the progressives. My astigmatism
numbers are like 007 and 133. I have to admit that the lower/stronger
the number gets, I wonder how much stronger the lenses will get before
the lenses are no longer correctable. I'm not afraid of this fact
because I realized as a young teen that both my parents had bad eyes
(both nearsighted) and that I may lose my sight at some point when I
get older. I just want to know how close I am to that happening if it
does.

Thanks.
Mike Tyner - 16 Sep 2007 04:29 GMT
>I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
> year when I was told that I have issues with accomodation and
> presbyopia.

Sometimes accommodation can seem reduced because the ciliary remains in
spasm, generating big (artificial) jumps in myopia, as well.

It would be rare at 33, but it makes me wonder if you had a good cycloplegic
refraction to confirm this latest big increase. If you are sure there is no
accommodative spasm, then all the "exercises" and "methods" and "prevention"
you'll hear from our peanut gallery become irrelevant.

> This is in addition to my extreme nearsightedness and
> astigmatism. I have had a drastic change in my prescription from last
> year and it just had me wondering if there is a maximum strength for
> eyeglass prescriptions? And if so, what is that amount?

At higher powers you can get modifications like the "myodisk" designs, but
I'd say long before that you'll want to start considering contacts. With
presbyopia, you might not get away from glasses entirely, but there are a
half-dozen ways to make contacts work for you. That said, I think a local
wholesale labs accepts orders up to -18. It isn't the lenses we have
problems with. It's fitting the frames around the lenses.

One way to avoid the thickness hassle is to use ordinary, inexpensive
contacts to take over the thickness part, and use (thin) glasses for the
astigmatism and presbyopia. You might see well enough to drive with those
contacts alone. You mentioned your astigmatism, but the numbers you gave
only told us where the astigmatism is, not how bad it is. Even with
astigmatism, toric contacts or gas perms could free you up to use drugstore
reading glasses.

If your myopia is axial, there's a mildly increased risk of retinal
detachment. That's the only consequence in ordinary myopia. If your myopia
is lenticular (not likely, but suggested by the presbyopia) then you might
expect cataracts early and plan on extraction as a means to correct the
myopia.

-MT, OD
p.clarkii@gmail.com - 16 Sep 2007 06:07 GMT
> I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 3 lines]
> year and it just had me wondering if there is a maximum strength for
> eyeglass prescriptions? And if so, what is that amount?

there is no maximum prescription.  lenses can be made to compensate
for just about any degree of myopia, astigmatism, or hyperopia so that
your eye can see 20/20 with them on (provided they are healthy and you
are too).  do not worry. practically speaking there will always be
lenses available that will work for you.

indeed, it is rather unusual for someone your age to have near
problems and need progressive lenses (I am an optometrist) who has
significant presbyopia symptoms until about age 40 especially if they
are myopic.  like MT said in his post, I believe you are having an
accommodation problem, possibly spasms or pseudomyopia.  I would
suggest a cycloplegic refraction using cyclopentolate (or stronger)
drops.

I wonder also if you have binocular vision problems.  do you ever have
double vision (e.g. when you are tired, or driving at night)?  Do your
eyes occasionally cross, or feel like they are about to cross?  Do you
ever get headaches, particularly after prolonged reading or near work?

> I don't have my prescription with me but I know that my eyes are -6.5
> and -6.75 with about a +2.0 for the progressives. My astigmatism
[quoted text clipped - 7 lines]
>
> Thanks.
lena102938 - 16 Sep 2007 22:38 GMT
On Sep 16, 12:07 am, p.clar...@gmail.com wrote:

> > I am 33 years old with progressive lenses which, by some sites,
> > shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 12 lines]
> indeed, it is rather unusual for someone your age to have near
> problems and need progressive lenses

Yes
Because the doctor say so
Neil Brooks - 16 Sep 2007 22:42 GMT
> Yes
> Because the doctor say so

Sorry.  Rishi Giovanni Gatti (Zetsu) and Otis Brown are
long-time trolls who haunt s.m.v.

Lena102938 aspires to troll status based primarily upon her
constant use of anti-eye doctor rhetoric as a
substitute for any actual information.

You'd do well to ignore them and wait for
responses from the caring, compassionate eye doctors who
DO also participate in this site.
Mark A - 16 Sep 2007 06:35 GMT
>I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 15 lines]
>
> Thanks.

-6.5 is moderately high, but some people have -12.00 and higher. However, if
you need more than -12.00 it is harder to find a lens (some people wear
contacts and glasses if their Rx get extremely strong).

You astigmatism is usually expressed as a minus power which you did not
state. The 007 and 133 are degrees which relate to the position off the
cylinder correction and has no correlation of how strong the astigmatism is
(that would be the cylinder power).

Actually, I am not sure if you have progressives or the +2.00 is your
astigmatism (cylinder power)? When cylinder is expressed as a +2.00 (instead
of a minus) then that changes the equivalent sphere power when comparing a
lens to a minus astigmatism.

What lens brand and model do you have? That will tell whether you actually
have progressives. If you are not sure, ask the person who dispensed your
lenses (if not written on your receipt).
L. Ron Waddle - 16 Sep 2007 06:40 GMT
> I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
> year when I was told that I have issues with accomodation and
> presbyopia. This is in addition to my extreme nearsightedness and'

Hmm, usually people do not need to be told they have issues with
accomodation and presbyopia. They can tell by themselves because they
start having to take their glasses off to see things up close, or have
trouble reading. I basically told my optometrist that I was having
trouble seeing up close and probably needed bifocals, she didn't tell
me. Granted, normal screening would have also detected it, but my point
was that I didn't need screening to know this, it was pretty obvious
that I was having reading difficulties pre-screening.

One question I do have is whether you were dilated when this finding was
made. When I was dilated, it caused my left eye to refract worse than it
normally does, causing the optometrist to issue a higher prescription. I
am not sure what the exact mechanism is or why this happened, but I do
know that glasses issued in the new prescription were quite obviously
wrong when I put them on over undilated pupils and when I was
re-refracted undilated, my left eye was back to its normal power.

> I don't have my prescription with me but I know that my eyes are -6.5
> and -6.75 with about a +2.0 for the progressives. My astigmatism

High index lenses can accomodate you fairly well for quite some time, my
brother's eyes were past -9 before his retinas detached and his glasses
were quite obviously thick but still usable backup for his contact
lenses. As others mention, due to the thickness of lenses at those
powers, glasses are heavy and cumbersome and used mostly as a backup to
contacts at those powers. However, at your age it is quite unlikely
you'll ever reach those levels, my brother was there by age 18 and his
first detachment was before age 30.

Insofar as eye health issues, extreme myopia is associated with
increased risk of retinal detachment, with myopia lower than -8 being a
particularly bad risk factor. The good news is that if you get surgery
immediately to re-attach the retina, sufficient sight can usually be
saved to continue a normal life. I would not, at your age, worry much
about blindness, just keep an eye out (pun intended) for the typical
signs of retinal detachment and if you detect ANY of them, immediately
go to your opthamologist. If you do not currently have an opthamologist
I suggest that you get one. That said, given the information you've
given us (you do not indicate that either of your parents or anybody
else in your family has experienced retinal detachment or blindness), I
wouldn't worry *TOO* much about it. You have a risk factor that needs to
be considered, but it isn't a high one.

-Elron
lena102938 - 16 Sep 2007 22:41 GMT
> I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 15 lines]
>
> Thanks.

Progressives spoil the vision tremendously.
They "turn off accomodation"
Try to switch to byfocals with "lines" , pleace
L. Ron Waddle - 17 Sep 2007 17:11 GMT
>> I am 33 years old with progressive lenses which, by some sites,
>> shouldn't happen until I'm in my 40's. I was put in progressives last

> Progressives spoil the vision tremendously.
> They "turn off accomodation"
> Try to switch to byfocals with "lines" , pleace

Just in case someone actually believes this, peer reviewed research
published in credible journals show no difference in progression of
myopia between young people wearing progressive lenses and young people
wearing single-vision lenses. Progressive lenses are nasty if you use a
computer, literally a pain in the neck (since you must keep moving your
head to focus properly on the different areas of the screen), and many
people have problems adapting to them, but criticisms of them tend to be
from the same sorts who believe the old wive's tale of "you'll hurt your
eyes if you keep reading so much!". (Which explains why I, who have read
probably 60,000 books since age 6, have better vision than my brother,
who reads only when forced to do so, hmm?).

Regarding "turn off accomodation", I don't know anybody who would use
progressives if their accomodative function was working properly. If
you're using progressives, it's because your accomodation isn't working.
You can't "spoil" something that isn't there.

Note: lena102938 is a USENET troll/kook and further replies to him/her
are not warranted. This message is intended for people other than the
troll/kook who might be confused. Replies from lena102938 will be ignored.
lena102938 - 17 Sep 2007 17:31 GMT
On Sep 17, 11:11 am, "L. Ron Waddle" <penguincathed...@yahoo.com>
wrote:
> >> I am 33 years old with progressive lenses which, by some sites,
> >> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 13 lines]
> probably 60,000 books since age 6, have better vision than my brother,
> who reads only when forced to do so, hmm?).

I bet, you skept H.C. Andersen
Neil Brooks - 17 Sep 2007 17:34 GMT
Sorry.  Rishi Giovanni Gatti (Zetsu), Lena102938, and Otis Brown are
trolls who haunt s.m.v.  Otis is pathologically
dishonest and actually hurts people.  Following his advice
can induce double vision in those not working with an eye doctor.

Lena102938 uses anti-eye doctor rhetoric as a substitute for any
actual information.  It seems she now has to wear glasses and has
developed a pathological (and ILLOGICAL) resentment toward the
industry
that "foisted these glasses upon her."

You'd do well to ignore them and wait for
responses from the caring, compassionate eye doctors who
DO also participate in this site.
Neil Brooks - 17 Sep 2007 17:32 GMT
On Sep 17, 9:11 am, "L. Ron Waddle" <penguincathed...@yahoo.com>
wrote:
> >> I am 33 years old with progressive lenses which, by some sites,
> >> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 22 lines]
> are not warranted. This message is intended for people other than the
> troll/kook who might be confused. Replies from lena102938 will be ignored.

Too, too true.

She and Otis do seem to have a few things in common:

- neither appears to think rationally or logically.  They seem
particularly fond, collectively, of hasty generalizations, straw man
arguments, red herrings, and conflating correlation with causation;

- each claims education and/or experience working in the sciences,
but both display an abject disregard for actual evidence and the
scientific method;

- both seem to have a pathological hatred that stems from their own
vision issues, leading both to long for somebody to blame.  Each has
chosen the vision care industry, at large as responsible for their
shattered dreams or damnable eyeglasses, yet without a shred of actual
evidence that any intervention caused their eye issues, or that any
intervention could have prevented them;

- both seem to have their minds TOTALLY made up, yet both have an
awful grasp of very relevant facts, and/or mis-state (for their own
agendas) facts presented to them;

- neither seems to actually PROCESS new information, even when
paraded in front of them;

- Lena seems to have come to us BY WAY OF Otis and his website.
Nothing could prove a more ignominious recommendation than that.

Sad.

Pathetic, really.
Dr Judy - 16 Sep 2007 22:45 GMT
> I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 3 lines]
> year and it just had me wondering if there is a maximum strength for
> eyeglass prescriptions? And if so, what is that amount?

There is no maximm, lenses can be made in any power.  The most I have
seen is -30.00

> I don't have my prescription with me but I know that my eyes are -6.5
> and -6.75 with about a +2.0 for the progressives. My astigmatism
[quoted text clipped - 5 lines]
> get older. I just want to know how close I am to that happening if it
> does.

Your myopia is moderate.  The astigmatism number you gave is the axis,
not the power, is the power the +2.00?

Needing bifocals at age 33 is unusual.   Do you have binocular
problems, glaucoma or diabetes?   They can cause a need for bifocals
or early presbyopia.

No one ever goes blind or loses sight simply due to myopia.  Blindness
is the result of eye disease, not needing glasses.

Dr Judy
Dan Abel - 17 Sep 2007 15:54 GMT
> I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 13 lines]
> get older. I just want to know how close I am to that happening if it
> does.

I can't imagine that a person would lose their sight due to being
nearsighted.  I would strongly urge you to consider contacts.  Many
people who are strongly nearsighted find that contacts work better than
glasses.  The nice thing about contacts is that if they don't work, or
you just don't like them, then you just stop using them.  You are out
nothing more than a little money and some time.  I wore contacts, with
OTC reading glasses over them for close work, for ten years.
Lee - 18 Sep 2007 21:36 GMT
To follow up, I got my new glasses yesterday, Monday Sept. 16. They
came with a handy little card showing my prescription. Due to my
insurance, I have the Kodak Unique Lenses that are 1.6 Instashades
evoclear gray. The dr. wanted me to have the transitions, anti-glare,
progressive lenses. The right sph. is -6.75, cyl. -1.25, axis 177 and
add +1.25. The left sph. is -6.50, cyl. -1.75, axis 1, and add +1.25.

(I need to insert apology here, because I wasn't expecting to get into
this. I just wanted to know about the script but y'all asked more
questions so here's what I konw.) Aside from the high prescription,
I've been having problems with a "haze" or what I can now describe as
the view when your contact moves off of your eye. I see some blurred
color and then after several minutes it clears back up. This is mainly
in the left eye. I talked to the dr May 2006 about this and that when
he put me in the progressives, performed all the tests that he could
perform, issued an MRI and for me to see the neurologist, checking for
a possibility of MS, along with other things. The neurologist said
that the tests were negative for MS and mentioned a small possibility
that it could be a migraine.

I told the eye dr yesterday that I was still having these problems and
that it felt like my left eye got worse since my script was written in
July '07, even before getting my new glasses. He conducted a new
visual test (which was normal) and dialated them for another look.
Everything seemed fine but he wanted me to come back today for the
refraction to be done again. I had to hand back my glasses because
there was a tiny change in the right eye (not sure which part) but the
astigmatism for the left eye went from -1.75 to -2.25. The dr said
that they'd replace the glasses for me. He wants me to follow up with
the neurologist again to make sure that everything's fine because he
still feels that there could be an issue like MS.

I don't know if this has any bearing or anything but I was in a car
accident and had surgery on my neck (C-5/C-6 area) in 2005. Recovery
went well. I was told that one issue with my vision and disconnected
feeling could just be scare tissue/damage from the car accident. The
disconnected feeling is that I feel like the right eye overpowers the
left eye. Sometimes I'm reading and it's hard, like I'm seeing words
and letters, I know they're words and letters, but I can't recognize
what those letters and words are despite knowing how to read.
Sometimes I reach for things and feel clumsy because I knock them over
or I'll reach inside the potato bowl instead of picking up the potato
bowl.

I used to wear contacts but I ended up in gas perms due to my
astigmatism. I was told that things have improved and I wanted to try
new contacts but $333 for glasses vs. $450-500 for contacts. Money's
REALLY tight since I'm looking for work so I chose the easy, less
expensive remedy.

I hope this helps y'all to understand. Thanks for the drs who have
posted. I'll check again in a couple of days.

Thanks,

Lee

> I am 33 years old with progressive lenses which, by some sites,
> shouldn't happen until I'm in my 40's. I was put in progressives last
[quoted text clipped - 15 lines]
>
> Thanks.
 
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