A high intensity laser could burn a hole in eyeball....
First hand the beer over to your friend...
Next take any of the first crop of laser sighting devices and point it at your eye in a mirror...
You will be in pain...and probably fall into the bathtub if you arent carefull and did this in the bathroom mirror
Your friend will probably say something like "Whoa!...that was AWESOME"
Now imagine a really big laser hitting you in the eye....and you are a pilot...
The military uses goggles designed for protection against such lasers as well as rifle scopes that will protect the user from being 'lased' will sighting...