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With respect, a coronory bypass is not really a valid analogy of laser treatment. While I am sure a coronary bypass carries set criteria, so does laser treatment. I am sure a surgeon would be aware of the criteria for coronary bypass patient, what I said was most people who are not doctors etc are not aware of the criteria for a succesful laser result. Laser patients TEND to understand the set criteria for a successful result.
I really think you may be focusing too much on the horror stories propogated in the media, don't forget the thousands of success stories.
I advise people to make up their own minds - at the end of the day, if someone takes the decision lightly, then, with respect, they must accept the consequences of their actions. Likewise if we choose to abuse our bodies through diving, we choose to accept the consequences.
Even sport diving has been found to have detrimental effects on the brains after autopsy. Sat divers have brain stems not unlike alcoholics. Rapid compression causes damage. Decompression diving can contribute to lesions on the brain and neurological abnormalities. Most people are aware of those risks - yet they choose to dive.
In practice, it is extremely rare for laser eye treatment to go wrong, this is in part because of the strict selection criteria of reputable clinics. The rare occasions where it does go wrong are blown up in the media, but the media does not report the success stories.
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