Divng (CW) with closed eyes is very much possible, if you keep your hands on the line. Actually, one of my friends usually dive with closed eyes, and once on a free immersion one hit the bottom (rock) with his head (at about 40), fortunately nothing happened - clean dive.

Other friend dove with closed eyes in a lake (I think CNF), and hit the bottom at 30 (mud) with a speed so his head dissapeared in the mud (sand)

. Then he reached for the rope very relaxed and pulled himself out of the dirt, and swam up - clean dive - not so clean wetsuit!

Like the monster of the lake he arrived to the surface!
BTW: closing your eyes at static: it is very good at the easy phase, and also good at the struggle phase. As Todd told, it is better to open the eyes at the end of the dive - it is easier to remain conscious.
What happened to me was, when doing the pool training realy in the morning, I did the O2 table with close eyes, relaxed, I started to sleep, still holding my breath.

Then I - as started to sleep deeper, and perhaps tried to take a breath - suddenly opened my eyes (like when you have to wake up, wakes up a bit early and sleep back for 5 minutes, and the watch beeps to wake you up), and saw, that I was only at the 3 min mark, so I continued the dive to the given time of the table. It was funny. Thsi happened only twice to me along my all trainings. So this is one danger of clsing your eyes, when you are really relaxed, and really sleepy.
