I would say silicone isn't LIKE glue, it IS glue. If you've ever smelled silicone caulk, the thick petroleum-based glue used to seal up windows and such, you wouldn't want it inside you. And the tube is convered with health warnings.
How do the people who sell these scientific advances that "improve" our lives have any credibility left? Does anyone remember when hydrogenated oil was considered a health breakthrough?
Incidentally, I think anyone who gets this new LASIK eye surgery hasn't been paying attention to history. You're going to let the same people who made your vision worse, by giving you "corrective" lenses instead of teaching proper seeing habits, to cut your corneas down real thin with a high-powered laser? Your eyes will be fine in 20 years, just fine...