I’m liking Neville’s comparison of CI to retinal implant, altho CIs have been around a lot longer. Part of the issue is that both retinal and Cochlear implants involve surgery that’s literally on top of primary sensory nerve bundle. LASIK, while certainly intricate and done on very delicate tissue, is done on a body part that in itself is mostly inert, the cornea/lens of an eye. There are no nerves and no blood vessels.
A retina or a cochlea is almost entirely made of tissue that’s packed with a variety of specialized cells and their specific and specialized nerve endings.not sure about retinas, but I’ve read papers that imply researchers have “tied” specific hair cells to particular brain areas. That’s more intricate than I can wrap my head around.
The other thing that makes me pause about CIs is implantation involves a skilled person (or their robotic equipment) and very sophisticated, miniaturized hardware. No such hardware is involved with LASIK.
All that said, I do wish “they” were progressing faster and further than they seem to be. Maybe the market just isn’t big enough to get the $$. Maybe the trends like this forum toward more consumer inclusion will help.