"Keith Nuttle" wrote in message
...

If after he gets back and starts to see a lot of floaters in his eye,
please have him get to the doctor immediately as that is a sign of a
detaching/detached cornea.

Actually floaters are very common, I have had them for at least the last 45
years, IIRC since I had the measles. IIRC floaters are often seen in people
that have had excessive eye stress/strain.