Soldato
Yes, you are correct. a correctly functioning self correcting lens is the best option.
But we are talking about people who do not have this option.
Multifocal lenses are nowhere near being a perfect alternative. You lose a lot of low light level ability because the lenses absorb a lot of light.
Also, not every-bodies brains can adapt to them. (It is a brain processing issue rather than a simple optics one)
When I was given the option 3/4 years ago the "Failure" rate for multifocals was about 1:20. If it didn't work for you, you would have to have another single focus lens replacement.
But, as I said earlier, apparently the tech has moved on and it is a lot better and a lot more predictive.
I can tell you lens replacement is not a pleasant procedure. I certainly would not want to have to do something like this twice. I am amazed that people have this done as an out-patient thing. For me, Mr Bupa paid for an overnight stay. and I was very grateful for this when about 01:00 my GF saw blood coming from my eye (It wasn't a problem. Amazingly my consultant was still there to come up to my room and reassure me. But then I guess that is what you get with private health care! (I also got a damn good full English breakfast the morning after too!))
Interestingly. I understand that cataract surgery is the #1 NHS procedure. And there is a bottleneck because there simply are not enough suitably qualified surgeons to meet the demand.
The silly thing is that, in principle, it isn't a particularly expensive procedure. and yet it has an enormous potential to improve the lives of millions of people.
The really sad thing is that the NHS basically waits until people are almost blind before authoring the surgery. and by that time, eyesight is frequently permanently damaged because the internal brain connections have been truncated and they never recover...
I was mostly responding to the assertion it would be better for younger people to get this over LASIK which I find ludicrous.