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Medical Forum / General / Vision / August 2005

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Question about Eyedrops

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Yasar, Mehmet PFC A Co 602D ASB - 31 Jul 2005 01:29 GMT
I have mentioned this a couple months ago but can not really believe it
is true. A person who claimed to be working as a certified optician
suggested me using eye drops for my eyestrain that usually appears after
close work and towards the end of the day. She suggested this is over
focus and I have most likely protein build-up. Sounds fishy to me
because how does Patanol which she suggested relax my eyes from
eyestrain???

Here is my valid question though, is there any eye drop on the counter
that relaxes the ciliary body or anything to that effect so eye strain
is relieved, if I asked the question technically wrong, let me ask this
simple way, are there any eye drops one can buy to relax eye strain? I
don't think so because then everyone would use eye drops instead of
glasses, right? Of course if the myopia is pseudomyopia...

Thanks alot, hope everyone is doing good...

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea

otisbrown@pa.net - 31 Jul 2005 15:21 GMT
Dear Yasar,

The meaning of the term "eye drops" is critical.

Some "eye drops" are medical, and
I suggest the term "atropine" and
"cyclogel" are some medical eye-drops.

The require medical supervision.

An "optician" is not a medical person,
an so could not prescribe them, now
could you buy them over the counter.

Some "eye drops" or eye-wash, you can,
and these are harmless.

The medical "eye drop" that paralyzes
the sphincter muscles, is said
to "relax" the muscles.
These have been used as
an "experiment" to attempt to
reduce the rate of myopia development.

Since the accommodation system
is paralyzed, it makes seeing "blurry"
except for one distance -- thus
they would be of very limited use.

I am certain the ODs and MD on
News Group can provide additional
details for your interest.

Best,

Otis
Mike Tyner - 31 Jul 2005 17:52 GMT
> Since the accommodation system
> is paralyzed, it makes seeing "blurry"
> except for one distance -- thus
> they would be of very limited use.

Does pirenzepine have the same effect on accommodation?

-MT
William Stacy - 31 Jul 2005 17:37 GMT
> I have mentioned this a couple months ago but can not really believe it
> is true. A person who claimed to be working as a certified optician
[quoted text clipped - 3 lines]
> because how does Patanol which she suggested relax my eyes from
> eyestrain???

It doesn't.  It's an anti-allergy drop and has little or nothing to do
with eyestrain.  If you have allergic conjunctivitis (easily diagnosed
because of the itching sensation it produces), Patanol will help.  If
not, it wont, or if it does, it's the placebo effect and cheaper
artificial tears will work just as well.

> Here is my valid question though, is there any eye drop on the counter
> that relaxes the ciliary body or anything to that effect so eye strain
> is relieved, if I asked the question technically wrong, let me ask this
> simple way, are there any eye drops one can buy to relax eye strain? I
> don't think so because then everyone would use eye drops instead of
> glasses, right?

No, because the more the ciliary body is relaxed, the harder you have to
"work" the eyes to see.  I suppose you could use a cycloplegic in
conjunction with the (then necessary) reading glasses, but most people
would consider that overkill.  I think it has been investigated in kids
that are developing myopia with mixed results.

w.stacy, o.d.
Yasar, Mehmet PFC A Co 602D ASB - 02 Aug 2005 13:21 GMT
> It doesn't.  It's an anti-allergy drop and has little or nothing to do
> with eyestrain.  If you have allergic conjunctivitis (easily diagnosed
> because of the itching sensation it produces), Patanol will help.  If
> not, it wont, or if it does, it's the placebo effect and cheaper
> artificial tears will work just as well.

Hello Bill,

No man, I don't have any allergies as far as I know, my eyes never itch.

> No, because the more the ciliary body is relaxed, the harder you have
> to "work" the eyes to see.  I suppose you could use a cycloplegic in
> conjunction with the (then necessary) reading glasses, but most people
> would consider that overkill.  I think it has been investigated in
> kids that are developing myopia with mixed results.

I was thinking about applying the drops and going to bed. Sometimes I go
to bed and I have the feeling like even my eyes are closed I am
straining to see.  Kind of thought  these drops would relax my eyes and
I'd have better vision in the mornings, I usually do have much much
better vision in the mornings until afternoons, then blurriness start to
sink in due to all the close work of the day, decreasing light levels,
etc. Like you said, maybe since I am slightly myopic, I feel and notice
the fluctuations more often than other higher myopes.

Thanks Bill...

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea
Tuesday, 02 Aug 2005 / 21:21:23 Korea Standard Time

William Stacy - 02 Aug 2005 15:50 GMT
An interesting concept, applying a mydriatic/cycloplegic drop before bed
time to assist the relaxing of the ciliary muscle.  Not sure if that's
been tried. As long as your anterior angles are wide open or not
occludable, I see no big risk in a trial of it, say for a week or two.

You'll need to find a somewhat experimental minded o.d.

w.stacy, o.d.

> I was thinking about applying the drops and going to bed. Sometimes I go
> to bed and I have the feeling like even my eyes are closed I am
[quoted text clipped - 6 lines]
>
> Thanks Bill...
Neil Brooks - 02 Aug 2005 16:13 GMT
>An interesting concept, applying a mydriatic/cycloplegic drop before bed
>time to assist the relaxing of the ciliary muscle.  Not sure if that's
>been tried. As long as your anterior angles are wide open or not
>occludable, I see no big risk in a trial of it, say for a week or two.
>
>You'll need to find a somewhat experimental minded o.d.

Hi.

It's been tried.  Me.

Long-term (6+ months) with Mydriacyl, then

[drawing a line here.  Mydriacyl has a relatively short half-life.
You won't wake up dilated.  Below this line, you will.  Believe me:
you don't want that.]

Some months with Cyclomydril, then

Some months with Cyclogyl, then

Some months with Homatropine, then

Six+ months with Atropine.

All were in an effort to stave off my ciliary spasm and keep me in the
workplace.  For mild cases, I have no doubt that something like
Mydriacyl (Tropicamide) would work.

Very little, however, is known about the possible effects of long-term
use of cycloplegics . . . .
William Stacy - 02 Aug 2005 17:54 GMT
Right, I forgot about you.  I'm pretty sure John doesn't have the
extreme kind of ciliary spasm you have, and he's a pilot, so strong
dilaters are out.  I'm thinking 1/2% tropicamide, or even diluting that
down to 1/4% would be pretty innocuous as a trial.

w.stacy, o.d.

>>An interesting concept, applying a mydriatic/cycloplegic drop before bed
>>time to assist the relaxing of the ciliary muscle.  Not sure if that's
[quoted text clipped - 27 lines]
> Very little, however, is known about the possible effects of long-term
> use of cycloplegics . . . .
Yasar, Mehmet PFC A Co 602D ASB - 03 Aug 2005 04:27 GMT
> Right, I forgot about you.  I'm pretty sure John doesn't have the
> extreme kind of ciliary spasm you have, and he's a pilot, so strong
> dilaters are out.  I'm thinking 1/2% tropicamide, or even diluting
> that down to 1/4% would be pretty innocuous as a trial.

Bill, this will require me to go back to flight surgeon and request this
trial right, there is no way I can obtain these drops from /other
sources/?? Because I know they will not let me give this a trial, they'd
rather go corrective lenses but the refraction is too small.

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea
Wednesday, 03 Aug 2005 / 12:27:09 Korea Standard Time

William Stacy - 03 Aug 2005 04:56 GMT
>> Right, I forgot about you.  I'm pretty sure John doesn't have the
>> extreme kind of ciliary spasm you have, and he's a pilot, so strong
[quoted text clipped - 5 lines]
> sources?? Because I know they will not let me give this a trial, they'd
> rather go corrective lenses but the refraction is too small.

Any o.d. has access to mydriacil. The problem is convincing them that
your idea of trying it at bedtime would "first, do no harm", if you know
what I mean.  And sneaking it without approval of the FS could obviously
get you into trouble.  Think what would happen if you had to report
early and your pupils were still dilated...  Be careful, my friend.

w.stacy, o.d.
otisbrown@pa.net - 03 Aug 2005 05:19 GMT
Dear Yasar,

I found this study where Bedrossian used atropine on a child
develping myopia.  Here is the report for your interest.

   Bedrossian, R.H., THE EFFECT OF ATROPINE ON MYOPIA, Annals of
   Ophthalmology, 3 (8):  890-899 (In this study of myopia
development,
   accommodation in one eye was prevented with atropine while the
other was
   not.  Result:  The atropinized eye stabilized, while the
non-atropinized
   eye progressed into myopia.)

Best,

Otis
Yasar, Mehmet PFC A Co 602D ASB - 03 Aug 2005 12:41 GMT
>Dear Yasar,
>
>I found this study where Bedrossian used atropine on a child
>develping myopia.  Here is the report for your interest.

Dear Otis, I am thinking this might not apply to me as I am 28 now, I
believe the development of my eyes should be completed long ago.

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea

RM - 03 Aug 2005 14:55 GMT

> Dear Otis, I am thinking this might not apply to me as I am 28 now, I
> believe the development of my eyes should be completed long ago.

You are correct.

Please disregard Otis' quote.  He is posting a study which suggests that
atropine may slow myopia progression.  As you realize, this does not apply
to you.

Otis does not realize this.  Whats the old saying "if you're a hammer, then
everything looks like a nail"?  Otis can't get myopia prevention off his
mind.
otisbrown@pa.net - 04 Aug 2005 03:51 GMT
Dear John,

The general question was about whether a paralyzing drug
had been used on the eye -- and its effect.

Clearly, this applies to children -- and you can discard it
as you wish.

I would never use atropine in this way.

It does suggest the "problems" that John
would have in the "military" if he attempted
to use any "drug" for the purposes of
protecting his vision in some manner.

Best,

Otis
Yasar, Mehmet PFC A Co 602D ASB - 03 Aug 2005 04:29 GMT
>All were in an effort to stave off my ciliary spasm and keep me in the
>workplace.  For mild cases, I have no doubt that something like
>Mydriacyl (Tropicamide) would work.
>  

Why did you get extreme ciliary spams Neil? How is it now?

>Very little, however, is known about the possible effects of long-term
>use of cycloplegics . . . .
>  

And do you mean the negative side effects or reversing this
pseudomyopia? I am 28 with a -.50, you know I can live with this. I was
just wondering.

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea
Wednesday, 03 Aug 2005 / 12:29:27 Korea Standard Time

Neil Brooks - 03 Aug 2005 05:29 GMT
>>All were in an effort to stave off my ciliary spasm and keep me in the
>>workplace.  For mild cases, I have no doubt that something like
>>Mydriacyl (Tropicamide) would work.
>>  
>>
>Why did you get extreme ciliary spams Neil? How is it now?

Hmm.  That's the big question.  Possibilities:

    1) I'm very farsighted and have a high degree of astigmatism.
Simply trying to compensate for this level of refractive error can
induce accommodative spasm, especially if I was undercorrected for any
length of time.  Glasses require that a farsighted person accommodate
more than would contact lenses.  (In a nearsighted person, this is the
opposite).  I wore glasses for the first 20+ years of my life;

    2) Neurologic predisposition.  Some people may simply be more
prone to ciliary spasm than others.  True ciliary spasm often presents
after motor vehicle accidents or other head/neurologic trauma/disease;

    3) Anomalous Lenticular Inelasticity.  In other words, if for
some reason my lenses have /always/ been less elastic than they should
be (the same thing that causes Presbyopia in forty-somethings), then
my ciliaries would have had to work exceptionally hard to achieve
focus;

    4) Genetic predisposition/ciliary hypertonicity.  In other
words, maybe my ciliary muscles were unusually 'toned' from birth;

    5) Some, all, or none of these ;-)

Nobody really knows....

How is it now?  I'm disabled.  Presbyopia is making/will make it
worse.

. . . but ciliary spasm, to my degree, is exceptionally rare.  That's
why so many doctors failed to diagnose it in my case.  My research
finally lead me to the diagnosis.

>>Very little, however, is known about the possible effects of long-term
>>use of cycloplegics . . . .
[quoted text clipped - 3 lines]
>pseudomyopia? I am 28 with a -.50, you know I can live with this. I was
>just wondering.

I mean side effects.  Cycloplegics are /rarely/ used long-term.  I
only know of a half-dozen cases where people with intractable ciliary
spasm were prescribed long-term use of Atropine.  I literally have not
been able to locate the people from this study to see what became of
them.  Atropine, for example, causes endothelial cell loss (eats away
at your cornea).
Yasar, Mehmet PFC A Co 602D ASB - 03 Aug 2005 12:40 GMT
>Atropine, for example, causes endothelial cell loss (eats away at your cornea).
>  

Neil, I am sorry to hear all that, I can't do much but hope the best for
you and pray, thanks for writing about your condition, though this part
you wrote is serious, noone wants to lose their healthy cornea, I am sure.

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea

Dr Judy - 04 Aug 2005 03:55 GMT
>> It doesn't.  It's an anti-allergy drop and has little or nothing to do
>> with eyestrain.  If you have allergic conjunctivitis (easily diagnosed
[quoted text clipped - 20 lines]
> said, maybe since I am slightly myopic, I feel and notice the fluctuations
> more often than other higher myopes.

I doubt if using drops at bedtime will affect your refractive error in any
way.  From the description of your symptoms, I don't think myopia is the
problem either.  My vote goes to dry eye, try OTC lubricating drops 4 times
a day and see what happens

Dr Judy

> Thanks Bill...
Dr Judy - 31 Jul 2005 17:52 GMT
>I have mentioned this a couple months ago but can not really believe it is
>true. A person who claimed to be working as a certified optician suggested
>me using eye drops for my eyestrain that usually appears after close work
>and towards the end of the day. She suggested this is over focus and I have
>most likely protein build-up. Sounds fishy to me because how does Patanol
>which she suggested relax my eyes from eyestrain???

Eyestrain is a vague term and can have many causes.  If you are approaching
forty or are moderately hyperopic, extended near work can fatigue the
muscles that focus the eyes at near.  That can result in discomfort and
blur.  If you do not have good tear quality, your eyes may be drying out
towards the end of the day and that will also cause discomfort and blurred
vision.  Humans cannot think and blink, when you are concentrating (ie near
work), your blink rate will drop from the usual 12 to 15 times per minute to
2 to 5 times per minute.  That long interval between blinks will allow the
eye to dry; the effect is worse in people with poor tear quality.

Tension in the facial muscles, especially the muscles around the eyes and
across the forehead can also be called "eye strain".  If you are squinting
to read due to blurred vision or if you tend to furrow your forehead when
thinking, then you may be tensioning those muscles excessively and will note
discomfort.

Are you using contact lenses --- protein build up can happen to contact
lenses.  When they are coated they will dry out and cause blurred vision and
discomfort.

Patanol will help if your eye discomfort is due to allergies.  Allergies
will cause itchy, burning, watery, dry, "pressure" feelings and, due to the
effect of allergies on the tear film, can also cause blurred vision
especially when the blink rate is low during concentrated visual tasks such
as driving, reading and computer work.  Patanol works by acting on the cells
lining the eye ball and lids to normalize them so they produce normal tears
instead of poor quality allergic tears.  If you have eye strain due to
conditions other than allergy, Patanol won't help.

> Here is my valid question though, is there any eye drop on the counter
> that relaxes the ciliary body or anything to that effect so eye strain is
> relieved, if I asked the question technically wrong, let me ask this
> simple way, are there any eye drops one can buy to relax eye strain? I
> don't think so because then everyone would use eye drops instead of
> glasses, right? Of course if the myopia is pseudomyopia...

If your eye strain at near is due to use of the ciliary muscle, it is easy
to relax the ciliary muscle without drops by using low power reading glasses
for near tasks.

There are no over the counter drops to relax the ciliary muscle.  However,
if there were, they would cause blurred vision at near and make your near
eye strain worse.  Some oral medications affect the same part of the nervous
system that controls the ciliary muscle and may have some relaxing effect --  
of course they would then cause blur at near and increase eye strain.  Anti
nausea drugs like Gravol and some anti histamines are in that class, they
also cause dry eye so eye strain would be increased two ways -- near blur
and fewer tears.

Over the counter eye lubricants like Systane, Tears Naturale,  Tear Gel,
Liquigel will help increase comfort if your only problem is poor tear
quality.   If your discomfort is due to uncorrected hyperopia or presbyopia,
drops (anti allergy or lubricating) won't help but reading glasses will
help.  Over the counter anti allergy drops are largely ineffective in
relieving allergic eye discomfort, prescription anti allergy drops like
Patanol do work for allergic eye discomfort.

Dr Judy

> Thanks alot, hope everyone is doing good...
Yasar, Mehmet PFC A Co 602D ASB - 02 Aug 2005 13:33 GMT
>Eyestrain is a vague term and can have many causes.  If you are approaching
>forty or are moderately hyperopic, extended near work can fatigue the
[quoted text clipped - 6 lines]
>eye to dry; the effect is worse in people with poor tear quality.
>  

I am 28 years old Dr. Judy. I don't know if I have good tear quality. I
don't know how it feels
when it is dry in your eyes, I assume it would be red and burning, I
don't usually get that,
only sometimes after shower, yes that happens.

> Tension in the facial muscles, especially the muscles around the eyes and
> across the forehead can also be called "eye strain". If you are squinting
> to read due to blurred vision or if you tend to furrow your forehead when
> thinking, then you may be tensioning those muscles excessively and
> will note
> discomfort.

No not this either.

> Are you using contact lenses --- protein build up can happen to contact
> lenses. When they are coated they will dry out and cause blurred
> vision and
> discomfort.

No Dr Judy, I am not using any lenses, my last eye exam revealed
(non-cyclo) -.50 right and -.25 left
and was somehow able to read 20/20 with both, I am amazed, don't know
how. I usually have the 20/20 line
slightly blurred on the chart I have in my room.

> Patanol will help if your eye discomfort is due to allergies. Allergies
> will cause itchy, burning, watery, dry, "pressure" feelings and, due
[quoted text clipped - 8 lines]
> instead of poor quality allergic tears. If you have eye strain due to
> conditions other than allergy, Patanol won't help.

What is a tear film?

>If your eye strain at near is due to use of the ciliary muscle, it is easy
>to relax the ciliary muscle without drops by using low power reading glasses
>for near tasks.
>  

Yes, I use +1.00 or +2.00 depending on the closeness of the work,
usually +2.00 for computer and
+1.00 at work. Most of the time, I find myself taking them off at work
though.

>There are no over the counter drops to relax the ciliary muscle.  However,
>if there were, they would cause blurred vision at near and make your near
[quoted text clipped - 5 lines]
>and fewer tears.
>  

What are the drops you use before your examinations? Suppose I used
these drops before going
to bed, would it help relax more during sleep and once in the morning
would provide better relaxed vision?

>Over the counter eye lubricants like Systane, Tears Naturale,  Tear Gel,
>Liquigel will help increase comfort if your only problem is poor tear
[quoted text clipped - 4 lines]
>Patanol do work for allergic eye discomfort.
>  

I just got out of shower and my eyes were red and burning, I tried my
roommates Visine Tears.
I didn't make any difference at all.

Thanks for your response....

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea
Tuesday, 02 Aug 2005 / 21:33:53 Korea Standard Time

Dr Judy - 04 Aug 2005 04:19 GMT
 Dr Judy wrote:
Eyestrain is a vague term and can have many causes.  If you are approaching
forty or are moderately hyperopic, extended near work can fatigue the
muscles that focus the eyes at near.  That can result in discomfort and
blur.  If you do not have good tear quality, your eyes may be drying out
towards the end of the day and that will also cause discomfort and blurred
vision.  Humans cannot think and blink, when you are concentrating (ie near
work), your blink rate will drop from the usual 12 to 15 times per minute to
2 to 5 times per minute.  That long interval between blinks will allow the
eye to dry; the effect is worse in people with poor tear quality.
 I am 28 years old Dr. Judy. I don't know if I have good tear quality. I don't know how it feels
 when it is dry in your eyes, I assume it would be red and burning, I don't usually get that,
 only sometimes after shower, yes that happens.

 Red and burning is more likely to be allergy or chemical irritation.  Dry eye very often manifests as "strain", "pressure" and blurred vision at near.

   Tension in the facial muscles, especially the muscles around the eyes and
   across the forehead can also be called "eye strain". If you are squinting
   to read due to blurred vision or if you tend to furrow your forehead when
   thinking, then you may be tensioning those muscles excessively and will note
   discomfort.

 No not this either.

   Are you using contact lenses --- protein build up can happen to contact
   lenses. When they are coated they will dry out and cause blurred vision and
   discomfort.

 No Dr Judy, I am not using any lenses, my last eye exam revealed (non-cyclo) -.50 right and -.25 left
 and was somehow able to read 20/20 with both, I am amazed, don't know how. I usually have the 20/20 line
 slightly blurred on the chart I have in my room.

   Patanol will help if your eye discomfort is due to allergies. Allergies
   will cause itchy, burning, watery, dry, "pressure" feelings and, due to the
   effect of allergies on the tear film, can also cause blurred vision
   especially when the blink rate is low during concentrated visual tasks such
   as driving, reading and computer work. Patanol works by acting on the cells
   lining the eye ball and lids to normalize them so they produce normal tears
   instead of poor quality allergic tears. If you have eye strain due to
   conditions other than allergy, Patanol won't help.

 What is a tear film?

 The tear film is the layer of tears covering the eyeball
If your eye strain at near is due to use of the ciliary muscle, it is easy
to relax the ciliary muscle without drops by using low power reading glasses
for near tasks.
 Yes, I use +1.00 or +2.00 depending on the closeness of the work, usually +2.00 for computer and
 +1.00 at work. Most of the time, I find myself taking them off at work though.

 Unless your computer is only about a foot away from your face, +2.00 is too strong for computer use, especially if you are a -0.50 myope.   You are likely leaning in closer to see it and that will cause neck and back muscle strain which may result in referred pain in the forehead/ eye area.
 That amount of plus will also reduce your normal accommodative convergence, leading your medial recti eye muscles to work overtime to keep the eyes aligned.  That could be the source of your strain.

 Are you more comfortable taking the reading glasses off for near work?  If so, leave them off and use artificial tears three to four times a day instead for a few weeks to see if they help
There are no over the counter drops to relax the ciliary muscle.  However,
if there were, they would cause blurred vision at near and make your near
eye strain worse.  Some oral medications affect the same part of the nervous
system that controls the ciliary muscle and may have some relaxing effect --  
of course they would then cause blur at near and increase eye strain.  Anti
nausea drugs like Gravol and some anti histamines are in that class, they
also cause dry eye so eye strain would be increased two ways -- near blur
and fewer tears.
 What are the drops you use before your examinations? Suppose I used these drops before going
 to bed, would it help relax more during sleep and once in the morning would provide better relaxed vision?

 The eyes have a variety of natural muscle tone during the various phases of sleep.  Interfering with them may well disturb normal sleep and cause more discomfort.  The drops would be worn off in the morning.  Even if they were not worn off, the relaxed ciliary muscle would provide worse, not better vision for near tasks and you would have increased eye strain.
 The underlying assumption that you are making is that use of the ciliary muscle is the cause of your eye strain.  This is the least likely cause.  

Over the counter eye lubricants like Systane, Tears Naturale,  Tear Gel,
Liquigel will help increase comfort if your only problem is poor tear
quality.   If your discomfort is due to uncorrected hyperopia or presbyopia,
drops (anti allergy or lubricating) won't help but reading glasses will
help.  Over the counter anti allergy drops are largely ineffective in
relieving allergic eye discomfort, prescription anti allergy drops like
Patanol do work for allergic eye discomfort.
 I just got out of shower and my eyes were red and burning, I tried my roommates Visine Tears.
 I didn't make any difference at all.

 Red eyes after the shower can be due to soap, shampoo or even simply water in the eyes.  Visine mostly makes decongestants which will not help dry eye.  The various kinds of Vision artifical tears contain preservatives that many people are sensitive to.  Try the other OTC artifical tears I mentioned.

 Thanks for your response....

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea
Tuesday, 02 Aug 2005 / 21:33:53 Korea Standard Time

Dr. Leukoma - 02 Aug 2005 13:56 GMT
There are no eyedrops available over-the-counter (at least in the U.S.)
for relieving "eyestrain."  Moreover, the terms "eyestrain" itself is
not specific, and is not a medical diagnosis.

There are drops to relieve dryness, there are drops to relieve itching.
There are also drops to relieve something called "lid myokymia," which
is the common twitching of the eyelid.

Drops to paralyze or relax the ciliary muscle are called cycloplegic
agents.  Those will result in blurred vision at near.  Basically, any
drug that has an anti-cholinergic action -- such as antihistamines,
certain antidepressants -- can affect accommodation and make it more
difficult to focus.

Another, often over-looked problem that can produce symptoms of
eyestrain, headaches, etc., is called convergence insufficiency.  It
can cause compensatory over-focusing (over-accommodation), and often
results in a slight amount of pseudomyopia.  It is aggravated by
wearing plus lenses.  The treatment ranges from eye exercises to the
use of nearpoint base-in prism.

As you can see, there are many potential factors involved.  Your
problem must be very bothersome as you have posted many times.

DrG
Yasar, Mehmet PFC A Co 602D ASB - 02 Aug 2005 14:10 GMT
>Another, often over-looked problem that can produce symptoms of
>eyestrain, headaches, etc., is called convergence insufficiency. * It
[quoted text clipped - 4 lines]
>
>  

You nailed it on the head, I was thinking something like this might be
possible. I am most likely to step back from close work for a while.

>As you can see, there are many potential factors involved.  Your
>problem must be very bothersome as you have posted many times.
>  

Not really bothersome but I am a hypochodriac, I am always thinking that
my Rx is progressing, I had below average vision during the weekend,
since monday I have above average vision. I notice the fluctuations more
than others maybe...

Thanks Dr. G.

Signature

PFC Yasar, M
U.S. ARMY
AH-64D "Armt Dawg"
A Co/602d ASB/2ID/EUSA
Camp Humphreys, South Korea

 
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