The latest issue of the Australian optometry journal has a review piece, free to the public, on the state of play:
http://onlinelibrary.wiley.com/doi/10.1111/j.1444-0938.2012.00783.x/abstract
I haven’t finished reading it all yet.
Wonder if you’ll be able to have them installed on stalks.
They need to get past the proof of concept stage (which is where they are now) before we can talk sports models!
:)
Whats the state of play of artificial lenses?
Artificial lenses are pretty good…..just ask the thousands of people who have cataract surgery every year.
Artificial lenses are pretty good…..just ask the thousands of people who have cataract surgery every year.
yeah, they look great.
buffy said:
Artificial lenses are pretty good…..just ask the thousands of people who have cataract surgery every year.
Does that happen to cure age related long sightnedness?
Yes, long sightedness….but not the presbyopia (which is probably what you are thinking about – the loss of near focussing ability)
Sometimes they are using lenses which ostensibly allow you to focus for both distance and near, but there are compromises as the lenses are Fresnel type lenses, diffraction type focussing rather than refraction. So you get lesser quality vision, but you get it at all distances. The most recent update I went to (May this year) and the relevent specialists couldn’t really say that they work well.
buffy said:
Yes, long sightedness….but not the presbyopia (which is probably what you are thinking about – the loss of near focussing ability)
oh why is that?? i thought the reason people got the presbyopia was because the lens hardened and couldnt be reshaped by the eye muscles as well?
Yes, that’s right. But no-one has yet managed to find a way to replace the lens with a malleable replacement. You have to break the lens capsule to remove the cataractous lens, and then you don’t have a capsule to hold a floppy lens any more.
(Is that clear?)
How much detail do you want?
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2908998/?tool=pmcentrez
Lots and lots of detail there……
Yes, it was published in 2008, but there haven’t been any breakthroughs.
buffy said:
Yes, it was published in 2008, but there haven’t been any breakthroughs.
thanks, shall take a look tomorrow…