What's your concern with accommodating intraocular lenses? Something that works with your particular vision issues? I live in a relatively rural region, and the eye care center that has them as an option is one of the big TV advertisers.
All current IOLs are non-accommodating: the multifocal IOLs work by having multiple rings beam two or three different focal lengths into your retina simultaneously.
The way a natural accommodating lens works is that your optical musculature physically flexes the lens to focus on the point you're looking at. The current non-accommodating multifocal lenses are stiff and fixed; the implantee handles the transition between focal points entirely in the mind's eye. While accommodating IOLs are being developed, they are currently not on the commercial market.
I have a multifocal IOL that I honestly love, and has allowed me to abandon wearing any glasses; I have crisp and natural vision except in certain edge-cases. Other people, however, never adapt, or dislike the artifacts of the multifocal rings (mostly halos around bright lights such as headlights).
You're correct that Crystalens had indeed been approved by the FDA, but has not been widely used because of issues with the IOL explanting. While there are resources on the web related to it, I'm not sure any surgeon is currently implanting it. My apologies if that's not accurate, but I wouldn't get a Crystalens today.
iwanttocomment beat me to it. AFAIK, accommodating IOLs have been in development/trials forever. I wasn't aware of Crystalens but looks like it is not ready for prime time.
