Double Vision

It happens every night. At a certain time my eyes get tired and I
start to see double. I instinctively close my bad eye if I want to
read, but it's not comfortable. Distant vision seems to be less
affected.

To remind you, I have a new IOL in my bad eye and I am myopic and
presbyopic. I am still using my old glasses while waiting for my new
glasses to be ready. There is a disparity between my eyes, but I
don't have double vision most of the time, only late in the evening.
Why is that?

On Aug 3, 1:48 am, "Ms.Brainy" <mikabra...@gmail.com> wrote:
> It happens every night. At a certain time my eyes get tired and I
> start to see double. I instinctively close my bad eye if I want to
> read, but it's not comfortable. Distant vision seems to be less
> affected.
>
> To remind you, I have a new IOL in my bad eye and I am myopic and
> presbyopic. I am still using my old glasses while waiting for my new
> glasses to be ready. There is a disparity between my eyes, but I
> don't have double vision most of the time, only late in the evening.
> Why is that?

Your eye muscles are most tired at the end of the day. That's when
double vision develops/worsens for many people. My best guess as to
etiology would be retinally-induced aniseikonia, probably secondary to
your macular pucker. Can you detect an image size difference between
your eyes?

Ms. Brainy, if your double vision disappears permanently when you
start wearing your new glasses, your aniseikonia is ocular. But if
you experience it with your new glasses, there is a probably a retinal
problem involved. (I know a lot about from personal experience.) In
this case, post again, and I can give you more advice/information.

On Aug 3, 5:28 am, Jane <clinton6...@hotmail.com> wrote:
> On Aug 3, 1:48 am, "Ms.Brainy" <mikabra...@gmail.com> wrote:
>
> > It happens every night. At a certain time my eyes get tired and I
> > start to see double. I instinctively close my bad eye if I want to
> > read, but it's not comfortable. Distant vision seems to be less
> > affected.
>
> > To remind you, I have a new IOL in my bad eye and I am myopic and
> > presbyopic. I am still using my old glasses while waiting for my new
> > glasses to be ready. There is a disparity between my eyes, but I
> > don't have double vision most of the time, only late in the evening.
> > Why is that?
>
> Your eye muscles are most tired at the end of the day. That's when
> double vision develops/worsens for many people. My best guess as to
> etiology would be retinally-induced aniseikonia, probably secondary to
> your macular pucker. Can you detect an image size difference between
> your eyes?

As usual, thank you Jane. Your willingness to share your experience
and knowledge are deeply appreciated. My double vision is crawling in
again, due to the late night hour...

Whether my night double vision is ocular or retinal induced, it does
not explain the fact that it happens only as my eyes get tired late in
the day. Or does it?

Anyway, I am not sure that it can be defined or determined as
aniseikonia (I had to google the word to find out its meaning...) and
I am looking forward to getting my new glasses next week, so I can
finally find out to what degree my vision is correctible. At this
point I can't tell you exactly what I see in my bad bionic eye
(scleral buckle, IOL and a retinal pucker), only that it's not very
good. In addition to impaired visual acuity, and in spite of having a
new clear lens (like yours), I see "fog" in that eye, and still wonder
if my new Rx will bring me back the famous bright intense colors.

But even now, my two-eyes combined vision is satisfactory and
acceptable, until I start seeing double... Retinal detachment is a
serious event for the eye and almost always ends up in damage and some
loss of vision. I also tend to think that my bad eye is the dominant
one, which is why I don't shut it off entirely.

On Aug 4, 2:00 am, "Ms.Brainy" <mikabra...@gmail.com> wrote:
> On Aug 3, 5:28 am, Jane <clinton6...@hotmail.com> wrote:
>
>
>
>
>
> > On Aug 3, 1:48 am, "Ms.Brainy" <mikabra...@gmail.com> wrote:
>
> > > It happens every night. At a certain time my eyes get tired and I
> > > start to see double. I instinctively close my bad eye if I want to
> > > read, but it's not comfortable. Distant vision seems to be less
> > > affected.
>
> > > To remind you, I have a new IOL in my bad eye and I am myopic and
> > > presbyopic. I am still using my old glasses while waiting for my new
> > > glasses to be ready. There is a disparity between my eyes, but I
> > > don't have double vision most of the time, only late in the evening.
> > > Why is that?
>
> > Your eye muscles are most tired at the end of the day. That's when
> > double vision develops/worsens for many people. My best guess as to
> > etiology would be retinally-induced aniseikonia, probably secondary to
> > your macular pucker. Can you detect an image size difference between
> > your eyes?
>
> As usual, thank you Jane. Your willingness to share your experience
> and knowledge are deeply appreciated. My double vision is crawling in
> again, due to the late night hour...
>
> Whether my night double vision is ocular or retinal induced, it does
> not explain the fact that it happens only as my eyes get tired late in
> the day. Or does it?
>
> Anyway, I am not sure that it can be defined or determined as
> aniseikonia (I had to google the word to find out its meaning...) and
> I am looking forward to getting my new glasses next week, so I can
> finally find out to what degree my vision is correctible. At this
> point I can't tell you exactly what I see in my bad bionic eye
> (scleral buckle, IOL and a retinal pucker), only that it's not very
> good. In addition to impaired visual acuity, and in spite of having a
> new clear lens (like yours), I see "fog" in that eye, and still wonder
> if my new Rx will bring me back the famous bright intense colors.
>
> But even now, my two-eyes combined vision is satisfactory and
> acceptable, until I start seeing double... Retinal detachment is a
> serious event for the eye and almost always ends up in damage and some
> loss of vision. I also tend to think that my bad eye is the dominant
> one, which is why I don't shut it off entirely.- Hide quoted text -
>
> - Show quoted text -

Ms. Brainy, you've had several problems that could cause diplopia.
Eye muscle problems can be a side effect of buckle surgery, resulting
in diplopia. Retinal re-attachment as well as a macular pucker can
result in changes in the photoreceptor distribution in the macula,
producing retinally-induced aniseikonia and diplopia. As I recall
from your previous posts, there's about a 2 diopter difference in
refraction between your eyes. Perhaps this is contributing to your
double vision. In any case, it's very common for eye alignment
problems to develop/worsen near the end of the day when your eye
muscles are tired.

I hope your new glasses will permanently correct your problems. If
they don't, there are still a lot of options for correction depending
on the cause, including prisms in your glasses, eye muscle surgery, a
new prescription incorporating a size lens correction, cataract
surgery in your "good" eye, and vision therapy exercises. One (or
several) of the above should work for you.

It's now 5 pm and I have no hint of double vision. But based on my
past experience I know that it will happen again later today. And
this is the key point: It happens later in the day/night.

My "diplopia" occurs only when I use both eyes. If I close the bad
eye it disappears. If I close the good eye I can't tell you what
happens because my vision is blurry and not yet properly corrected to
its max potential. My subjective feeling is that I experience
difficulty to focus during my double vision period, and capable only
of staring out of focus. And this is what puzzles me.

Neil, the outcome of my IOL implant is only -1D difference between my
eyes -- certainly not enough to cause diplopia. Now, since my IOL
cannot accommodate at any time, I believe that my IOL vision is always
of the "stare" nature, i.e. focusing is not something that I can
control -- my IOL eye focuses on its own at a set point. So why does
it become an issue when my eyes get tired?

Please remember that I have had 3 eye surgeries, of which the last cat
surgery was the easiest and lightest. And as to the methods of
correcting the problem, it actually corrects itself every day...
Anyway, I am waiting impatiently (but hopfully) for my new glasses.

Ms. Brainy,

I sometimes experience a sort of double vision when my eyes are tired
(especially from working at the computer), and when one eye is doing
more "work" than the other. It feels like my eyes are "crossing". When
I look at a distant point across the room or down the street, it's
double, because I can't straighten out my focus. Sometimes I have to
cover one eye to watch TV. The problem goes away after I rest my eyes
or sleep overnight.

Hopefully your new glasses will help you use both eyes more equally
and reduce the fatigue.

Calli

On Aug 4, 6:26 pm, callimic...@yahoo.com wrote:
> Ms. Brainy,
>
> I sometimes experience a sort of double vision when my eyes are tired
> (especially from working at the computer), and when one eye is doing
> more "work" than the other. It feels like my eyes are "crossing". When
> I look at a distant point across the room or down the street, it's
> double, because I can't straighten out my focus. Sometimes I have to
> cover one eye to watch TV. The problem goes away after I rest my eyes
> or sleep overnight.
>
> Hopefully your new glasses will help you use both eyes more equally
> and reduce the fatigue.
>
> Calli

You are describing exactly what I experience, except that my double
vision is more pronounced at a shoter distance. If this continues
with my new glasses, perhaps I can use it as a reversed alarm clock
that tells me it's bed time...

On Aug 4, 8:34 pm, "Ms.Brainy" <mikabra...@gmail.com> wrote:
> It's now 5 pm and I have no hint of double vision. But based on my
> past experience I know that it will happen again later today. And
> this is the key point: It happens later in the day/night.
>
> My "diplopia" occurs only when I use both eyes. If I close the bad
> eye it disappears. If I close the good eye I can't tell you what
> happens because my vision is blurry and not yet properly corrected to
> its max potential. My subjective feeling is that I experience
> difficulty to focus during my double vision period, and capable only
> of staring out of focus. And this is what puzzles me.
>
> Neil, the outcome of my IOL implant is only -1D difference between my
> eyes -- certainly not enough to cause diplopia. Now, since my IOL
> cannot accommodate at any time, I believe that my IOL vision is always
> of the "stare" nature, i.e. focusing is not something that I can
> control -- my IOL eye focuses on its own at a set point. So why does
> it become an issue when my eyes get tired?
>
> Please remember that I have had 3 eye surgeries, of which the last cat
> surgery was the easiest and lightest. And as to the methods of
> correcting the problem, it actually corrects itself every day...
> Anyway, I am waiting impatiently (but hopfully) for my new glasses.

I believe your double vision is due to ocular causes-- that is
alignment of your eye is slightly off. You can strain throughout the
day to keep them aligned but when you get tired at the end of the day
alignment cannot be maintained. That is why you get diplopia at night
and also why you don't get it when you use one eye all day long. I
don't think, as you suspect yourself , that aneisokonia is the
majority of the problem. I think you need to get a careful binocular
evaluation looking for phorias and tropias. perhaps a little prism
will save the day,

On Aug 5, 8:09 am, p.clar...@gmail.com wrote:
> On Aug 4, 8:34 pm, "Ms.Brainy" <mikabra...@gmail.com> wrote:
>
>
>
>
>
> > It's now 5 pm and I have no hint of double vision. But based on my
> > past experience I know that it will happen again later today. And
> > this is the key point: It happens later in the day/night.
>
> > My "diplopia" occurs only when I use both eyes. If I close the bad
> > eye it disappears. If I close the good eye I can't tell you what
> > happens because my vision is blurry and not yet properly corrected to
> > its max potential. My subjective feeling is that I experience
> > difficulty to focus during my double vision period, and capable only
> > of staring out of focus. And this is what puzzles me.
>
> > Neil, the outcome of my IOL implant is only -1D difference between my
> > eyes -- certainly not enough to cause diplopia. Now, since my IOL
> > cannot accommodate at any time, I believe that my IOL vision is always
> > of the "stare" nature, i.e. focusing is not something that I can
> > control -- my IOL eye focuses on its own at a set point. So why does
> > it become an issue when my eyes get tired?
>
> > Please remember that I have had 3 eye surgeries, of which the last cat
> > surgery was the easiest and lightest. And as to the methods of
> > correcting the problem, it actually corrects itself every day...
> > Anyway, I am waiting impatiently (but hopfully) for my new glasses.
>
> I believe your double vision is due to ocular causes-- that is
> alignment of your eye is slightly off. You can strain throughout the
> day to keep them aligned but when you get tired at the end of the day
> alignment cannot be maintained. That is why you get diplopia at night
> and also why you don't get it when you use one eye all day long. I
> don't think, as you suspect yourself , that aneisokonia is the
> majority of the problem. I think you need to get a careful binocular
> evaluation looking for phorias and tropias. perhaps a little prism
> will save the day,

I start to think that it might be computer induced fatigue. I recall
quite a few discussions here about this issue, which I never read with
much attention since I didn't think it applied to me. Can anybody
tell me what causes computer fatigue and what are the symptoms?