Changes in eyes AFTER Lens Exchange
Posted , 4 users are following.
Hi,
I wanted to start this subject to check experiences/knowledge in the matter.
In my example :
hyperopic with astigmatism +5, -2 --> 0 after Lasik --> +3, -1,5 after 9 years --> now(10 more years) +6, -2,25
If lens exchange ? will the changes in eye stop ? Are the changes to hyperopic/astigmatism from Lens, Cornea or other components in eye ?
Anyone knows ?
And also for the ones (most) with similar myopia changes...?
Appreciate any insight.
It could be good with some knowledge in the long term planning.
~Swede~
0 likes, 6 replies
RonAKA Swede_in_Vegas
Edited
Is it possible you have a cataract? My vision was relatively stable -- perhaps slightly improving as my lens aged over 20 years. Then when I started to develop a cataract both sphere and cylinder (-2.75) increased quite a bit. I just recently had the cornea measured for an IOL. It turns out that i have near zero astimatism in my cornea. So I have to conclude based on my own experience that it is mainly the lens that changes over time. A sample population of one! I asked my surgeon if it would remain stable after IOL, but got a somewhat guarded answer -- yes, normally it does, but if it does change we can make incision adjustments to compensate.
Swede_in_Vegas RonAKA
Posted
Hi,
Clarification:
I am planning for Lens replacement - and wondering if the Eye itself changes down the road - NOT before or due to the surgery - but let's say from 6 month after the surgery and going forward.
Lens will be static so it cannot create hyperoia or myopia - but the other Eye parts ?
I am hoping there will be no changes in other eye parts for the oncomming years, but that is really my question , since I don't know....
RonAKA Swede_in_Vegas
Posted
I understood your question, and my answer was that in my personal case, it appears the variability over time is in the lens not the cornea. After IOL the lens of course will not change, and the odds are that the cornea will not either. If you look at this report on a monovision option for IOL, it appears visual acuity does not change over a period of 10 years or more. See Table 1 in this report:
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Monovision Strategies: Our Experience and Approach on
Pseudophakic Monovision
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Swede_in_Vegas RonAKA
Posted
Thank you RonAKA - I was afraid I had put a vague question , misleading people - maybe also someone with long time experience of implanted iol and/or professional knowledge in the field or someone that can refer to another expert reference could chime in ?
Does other parts than the lens, change and affect the refraction and/or astigmatism after an iol change ?
Hope it can be helpful for others too.
RonAKA Swede_in_Vegas
Posted
I hope you get answers from those with more experience. My observations are that about 90% of people get cataracts, and those certainly impact vision over time, and are located in the lens. And 100% of people get older, and as we age our lens ages and gets more rigid, and provides less accommodation. Both of these issues are solved essentially with an IOL. However, cornea and other issues I'm sure occur too, but probably less frequently and less predictably than lens issues.
Guest Swede_in_Vegas
Edited
Hi there
In healthy eyes the needed power from the iol does not change, but for some reason eye doctors always speaks very quietly or coughs when they say it.... 😃
The needed power itself really do not change, unless something else happens.
But 2/3 of the power that is used to focus the image on to the retina comes from the cornea, the iol is only 1/3 of the power.
And as time goes by, the cornea can change shape slightly, and therefore can develop some astigmatism. It is really not possible to predict, for some it never happens, others develop mild astigmatism over a 10-20 years period.
It is very common that cataracts makes changes to your glasses prescription, both regarding power and astigmatism. When the cataracts develop, the lens gets slightly bigger, and it moves stuff around.
Whether there is something else that makes these changes in your eyes, I think only your eye doctor can answer - or he will probably too cough when he answers....