Originally posted by: WebDude
Originally posted by: drewdogg808
these are great sites for backup glasses....can't beat the price.
as for lasik....alot of you guys need to read more about it and get your facts straight...
loss of night vision? forced you to wear glasses all the time? these are not true.
earlier broadbeam lasers had more issues with night time glare and halos, but you do not lose vision.
everyone on the planet goes through the process of losing reading ability in their mid-late forties....you will just need to wear reading glasses just as someone with perfect distance vision all their life will at that age. the only exception would be someone who is mildly nearsighted who will have to take off their distance glasses to read, or get bifocals.
as for the high pressurized scuba mask causing the flap to pop off....i haven't heard of this or read any studies on it, but perhaps i'll find out in a few years when i try scuba diving...i don't plan on going to extreme depths though so who knows what military classified information has info on. i think the military probably doesn't want their people to have lasik in the case of combat where direct blows to the eyes can possible cause flap dislocation....but thats just my guess.
diving and lasik....info near bottom
I don't want to turn this into a lasik thread. BUT
I had lasik in Mar. of 2000. I haven't been able to drive safely at night since that time. It's not really an issue of broadbeam vs. custom lasik. It's more a question of ablation diam. vs. pupil size. If your pupil opens up beyond the ablation zone at night, you don't see well. (I don't drive at night.)
Many people do loose a line or two of best corrected specticle vision on the snellen eye chart after lasik. It's theorized that lasik induces higher order aberrations in the cornea that causes this, but that's still debated. Whether the new "custom lasik" lasers can cure this problem is still an open question.
The greatest post lasik problem that I've heard about, and myself personally have to live with, is permanent dry eye. Yet it's hardly ever mentioned. Cutting the lasik flap severs the nerves on the surface of the cornea that trigger tears. In some people these nerves never grow back fully, resulting in a decrease of tears, which in some people equates with permanent dry eye. Permanent dry eye is NOT fun to live with.
As far as the military goes, in the past they allowed and even offered PRK, but not lasik. I don't know if they've expanded their policy to include lasik yet or not.
Lasik does weaken the cornea somewhat, and they've been reports of mountain climbers who have had lasik experiencing a refractive shift at high altitudes due to this (the internal pressure of the eye causes the cornea to distort more when the outside pressure is reduced). The flap won't come off, however, unless there's a violent jarring to the eye, like in a car crash (which has been documented).
Bottom line, if you're thinking of having lasik, my suggestion is to read the FDA advisory about it.
http://www.fda.gov/cdrh/lasik/risks.htm
Then buy a good pair of glasses, and be happy with the vision you have.
WebDude