You've gone into the technical depths of this much more than I have. For
me, visual sharpness and color perception improved drastically after
cataract surgery than before. The main visual issue is that I see
crunchy halos around bright light sources at night. And I find bluish
LED car headlights painful. I call them "death rays." I just got a pair
of light yellow glasses that fit over my regular specs. They mitigate
the death-ray effect without significantly diminishing my view of the
road and idiot pedestrians that insist on wearing black at night.
I had other complications that I discussed here long ago. I had a
detaching retina a year after the first surgery (fluid leaked under the
retina from the pulling during surgery). And a macular pucker on the
other eye a few months after the second. And I ended up seeing double at
distances because the surgery and change of focal length aggravated
underlying strabismus in both the vertical and horizontal planes. All
this has been corrected now, but I need prisms in my glasses for all but
close vision. I'm an outlier--most people do fine.
> Wayne writes:
> <<Mike, interesting observation on CA as I've just had cataract
> <<second eye this morning. Do you have a good reference on the resultant
> <<visual effects of this surgery?
> I hope all went well. IOL exchanges are a pain.
> The use of spherical aberration or other techniques to extend the
> field for IOL's (Intraocular lens) informs the IOL choice and not
much to do
> after if the refractive targets were hit and you are happy.
> On the other hand for someone with large pupils who drives at night
> cancelling out the corneal pos SA with an aspheric monofocal IOL may
> advantage to maximize contrast sensitivity at the cost of very narrow
> Rayone EMV IOL uses modest pos SA in the center with a rapid taper to
> neg SA towards periphery to extend the dof about 1.5 diopters. Truly
> accommodating IOL's with no downside (except expense of course) are
> works but it will be a few years. Eyhance IOL uses a small amount of
> but it buys only 0.4D or so on average of extended dof. It does
> in patients with largish pupils as the MTF doesn't plummet as it
> the corneal pos SA. Clear vision, Mike
Themed Olympus Photo Exhibition: http://www.tope.nl/