> What is fogginess after a cataract operation? And how come we're photo-sensitive
> afterwards?
There is some corneal edema (swelling) and your eyes are widely dilated
on the day of the surgery. This should be pretty much gone by the next day.
> Yesterday I had cataract surgery at my local public hospital. It was performed
> under the New Zealand free public health service, and was rather an excellent
> experience. The most discomfort I felt was in the anaesthetic room prior to
> surgery where they fitted the block at the side of the eye, somehow seemed like
> they were manhandling the eye sideways a lot, and that felt awful.
It does. When I had mine done, I found a surgeon who used anesthetic
drops alone.
> My other eye is -3.50. The aim is to give me an IOC that will result into some
> myopia, -1.25 or thereabouts. I'm very pleased with that.
Good choice.
> After the op the eye was covered with full eye covering and shield. That same
> day I was in slight dull pain after the meds wore off, but nothing much.
[quoted text clipped - 7 lines]
> sensitive to light. Fairly sharp pain on looking at daylight, say, out the
> window.
This needs to be checked carefully. You may have had some corneal
damage. Probably will clear up, but I'd stay on top of it.
> Eye pressure was normal (15), and they said the mistiness is also one of the
> usual responses. Perhaps overnight pressure build up and caused some reaction of
> the cornea to fog up.
Not if the pressures are 15, which is normal and would NOT cause foginess.
> Day 1 late afternoon and the mist is clearing. Just a hazy halo effect from any
> brightly lit parts.
So it's probably just the dilation taking longer to wear off.
> What might this fogginess have been? and how come we're photo-sensitive after a
> cataract operation?
See above, but still not certain. I'd guess a combo of the dilation and
maybe a corneal abrasion. My vision was crystal clear the next morning
after both surgeries. But then I had no anesthetic injections and no
patching or suturing was required. Did you have any stitches?
w.stacy, o.d.
quattrocchi - 14 May 2005 22:50 GMT
>> What is fogginess after a cataract operation? And how come we're
>> photo-sensitive afterwards?
> There is some corneal edema (swelling) and your eyes are widely dilated on
> the day of the surgery. This should be pretty much gone by the next day.
The dilation was certainly gone by the next day, when I first had the covering
removed.
>> I went into the hospital this first morning and they removed the eye
>> covering.
>>
>> However I was greeted by very cloudy vision - like a heavy mist - and
>> extremely sensitive to light. Fairly sharp pain on looking at daylight, say,
>> out the window.
> This needs to be checked carefully. You may have had some corneal
> damage. Probably will clear up, but I'd stay on top of it.
Thanks.
>> Eye pressure was normal (15), and they said the mistiness is also one of the
>> usual responses. Perhaps overnight pressure build up and caused some reaction
>> of the cornea to fog up.
> Not if the pressures are 15, which is normal and would NOT cause foginess.
Might the pressure have been higher o/night?
>> Day 1 late afternoon and the mist is clearing. Just a hazy halo effect from
>> any brightly lit parts.
> So it's probably just the dilation taking longer to wear off.
I noticed that my pupil was not dilated the day after.
In fact ATM the eye is less dilated than the normal eye. A smaller black dot.
Now it's Sunday, the 2nd day after the Friday operation, and the haziness has
diminished somewhat to about 15% of what it was. But it's still hazy or foggy.
And brightly-lit things seems to spread into the adjacent dark areas. AS IF the
pupils were dilated.
>> What might this fogginess have been? and how come we're photo-sensitive after
>> a cataract operation?
> See above, but still not certain. I'd guess a combo of the dilation and
> maybe a corneal abrasion. My vision was crystal clear the next morning
> after both surgeries. But then I had no anesthetic injections and no
> patching or suturing was required. Did you have any stitches?
No stitches, I believe, though I didn't actually check afterwards. I asked
before the op and the surgeon said stitches were not usually used. Only in
difficult circumstances. I believe mine was not a difficult circumstance.
Brian

Signature
Auckland NEW ZEALAND
quattrocchi - 15 May 2005 02:49 GMT
> >> What is fogginess after a cataract operation?
> [...]
> Now it's Sunday, the 2nd day after the Friday operation, and the haziness has
> diminished somewhat to about 15% of what it was. But it's still hazy or foggy.
After a little googling, I'm now wondering if I have posterior capsular
opacification' <www.eyemdlink.com/Condition.asp?ConditionID=354>.
Brian
David Robins, MD - 15 May 2005 04:08 GMT
Since they mentioned the corneal edema as being visible the first day, it is
most likely that, and takes a few days to a couple weeks to clear up,
usually,
Way too soon for posterior capsular opacification at this point. Usually
occurs months later.
On 5/14/05 6:49 PM, in article
1116122037.5957d73585f5395554d93963578b32c2@teranews, "quattrocchi"
>>>> What is fogginess after a cataract operation?
>> [...]
[quoted text clipped - 6 lines]
>
> Brian
William Stacy - 16 May 2005 00:48 GMT
> Might the pressure have been higher o/night?
It *could* have been, but if it measured 15 the next day, any fogginess
from pressures would already subside. The cornea swells from high
pressure, but clears as soon as the pressure drops, unless something
else is causing it.
> I noticed that my pupil was not dilated the day after.
> In fact ATM the eye is less dilated than the normal eye. A smaller black dot.
[quoted text clipped - 3 lines]
> And brightly-lit things seems to spread into the adjacent dark areas. AS IF the
> pupils were dilated.
Could be an inflammatory response. You are taking steroid drops, right?
And SHAKING the bottle well EVERY TIME YOU USE IT, right?
w.stacy, o.d.
quattrocchi - 16 May 2005 03:30 GMT
> > Might the pressure have been higher o/night?
> It *could* have been, but if it measured 15 the next day, any fogginess
> from pressures would already subside. The cornea swells from high
> pressure, but clears as soon as the pressure drops, unless something
> else is causing it.
> > I noticed that my pupil was not dilated the day after.
> > In fact ATM the eye is less dilated than the normal eye. A smaller black dot.
[quoted text clipped - 3 lines]
> > And brightly-lit things seems to spread into the adjacent dark areas. AS IF the
> > pupils were dilated.
> Could be an inflammatory response. You are taking steroid drops, right?
Yes.
> And SHAKING the bottle well EVERY TIME YOU USE IT, right?
<ulp> I'll start doing that right away!
Thanks.
David Robins, MD - 16 May 2005 07:24 GMT
Corneal edema can occur from reasons other than high pressure. A common
cause is just from the shock of surgery and the irrigation inside the eye
affecting the endothelial cells on the back of the cornea.
When they (the endothelial cells) are not working up to speed, fluid passed
though them and gets into the cornea. If they recover, the edema goes away
in a few days to as much as a few weeks in severe cases.
If they were borderline to begin with, and are further damaged, the edema
could potentially stay. Those are the very few patients who end up needing
corneal transplants for pseudophakic bullous keratopathy.
PS: Shake well means about 20 shakes every time the steroid drops are used.
On 5/15/05 7:30 PM, in article
1116210734.690da66a47e23bd162cf3fdea4677474@teranews, "quattrocchi"
>>> Might the pressure have been higher o/night?
>
[quoted text clipped - 24 lines]
>
> Thanks.
quattrocchi - 19 May 2005 03:22 GMT
> Corneal edema can occur from reasons other than high pressure. A common
> cause is just from the shock of surgery and the irrigation inside the eye
> affecting the endothelial cells on the back of the cornea.
> When they (the endothelial cells) are not working up to speed, fluid passed
> though them and gets into the cornea. If they recover, the edema goes away
> in a few days to as much as a few weeks in severe cases.
Thanks for that explanation.
I can now report that today (day 6) I woke up to very litle haze and was also
experiencing, understandably, clearer focus. Wonderful. Last night (day 5) I'd
noticed with some anxiety that the haziness was still at about the 10%-15% level
of day 1.
Then such a marked improvement happened overnight.
I wonder what my new Rx will be. The surgeon had said she was aiming for around
some residual myopia of -1 in the IOL, so yesterday I'd replaced my previous
glasses lens (sph -4.50; cyl -3.25) with a -1.00 to try to give me some basic
focus. But now that I can see better with almost zero haze the -1.00 lens seems
too strong. Or might that be the astigmatism.
Brian

Signature
Auckland NEW ZEALAND
David Robins, MD - 19 May 2005 04:58 GMT
While the cornea is healing, it changes power, especially if there is some
edema.
Which is why a refraction to order glasses is usually about 4 weeks postop,
not a few days.
Also, the "aimed for" power is only a estimate - once it heals you can
easily be +/- 0.50 to 1.00, mainly because the instrument and equations
don't know where the IOL will heal in the eye until it does., so it uses
averaged estimates.
> Then such a marked improvement happened overnight.
>
[quoted text clipped - 7 lines]
>
> Brian
quattrocchi - 19 May 2005 10:08 GMT
> While the cornea is healing, it changes power, especially if there is some
> edema.
> Which is why a refraction to order glasses is usually about 4 weeks postop,
> not a few days.
> Also, the "aimed for" power is only a estimate - once it heals you can
> easily be +/- 0.50 to 1.00, mainly because the instrument and equations
> don't know where the IOL will heal in the eye until it does
So, does the IOL heal in the capsule into a permanent position which might be
slightly variable, unpredictably, WRT distance from the cornea/retina, within
certain parameters? Interesting. I naiively assumed first that the natural lens
was free inside the capsule, and second the IOL sits inside the newly vacated
capsule.
I find it all very fascinating, and thirst for more details.
> ., so it uses averaged estimates.
I shall wait the prescribed 4wks with bated breath.
Brian

Signature
www.adam.co.nz
William Stacy - 19 May 2005 13:28 GMT
> So, does the IOL heal in the capsule into a permanent position which might be
> slightly variable, unpredictably, WRT distance from the cornea/retina, within
> certain parameters? Interesting. I naiively assumed first that the natural lens
> was free inside the capsule, and second the IOL sits inside the newly vacated
> capsule.
The capsule actually can "shrink wrap" around the IOL and little or no
movement takes place, except maybe the crystal lens which is designed to
move a little. Jury still out on that one.
w.stacy, o.d.
David Robins, MD - 20 May 2005 04:44 GMT
On 5/19/05 2:08 AM, in article
1116493871.48e6734c23beda609c58b3ef915d80ae@teranews, "quattrocchi"
>> While the cornea is healing, it changes power, especially if there is some
>> edema.
[quoted text clipped - 9 lines]
> slightly variable, unpredictably, WRT distance from the cornea/retina, within
> certain parameters?
Answer: YES.
> Interesting. I naiively assumed first that the natural
> lens
> was free inside the capsule,
NO. It has attachments to the capsule that have to be lysed to make the lens
mobile.
>and second the IOL sits inside the newly vacated
> capsule.
CORRECT.
> I find it all very fascinating, and thirst for more details.
>
[quoted text clipped - 3 lines]
>
> Brian
William Stacy - 19 May 2005 05:45 GMT
> Then such a marked improvement happened overnight.
Glad to hear it. Always helps to shake the pred forte.
> I wonder what my new Rx will be. The surgeon had said she was aiming for around
> some residual myopia of -1 in the IOL, so yesterday I'd replaced my previous
> glasses lens (sph -4.50; cyl -3.25) with a -1.00 to try to give me some basic
> focus. But now that I can see better with almost zero haze the -1.00 lens seems
> too strong. Or might that be the astigmatism.
Could be. If you didn't have astigmatism relaxing incisions, you'll
still need a significant cylinder in your glasses, unless that was late
developing astigmatism (lenticular as opposed to corneal).
Either way, you'll do fine.
w.stacy, o.d.