[Alun]

i totally forgot that i ever experienced this until i read your post.
this has happened to me once, during the very first time i scuba dived (in a swimming pool). obviously it happened in 2-3m of water. i felt quite sharp pain around my eye - actually it felt like it was behind my eye as i remember. after the dive, i mentioned it to my instructor and he had never heard of it. in fact, i've never heard of it since, until now, and i've never experienced it since either.

unfortunately, i can't offer you any good advice about this. all i can tell you is that i've been there and know what you're talking about. my suggestion is to find a really good diving doctor and ask him about it. it must be some form of pressure effect. there must be some pressure differential near the site of the pain - it's the only logical answer really. perhaps for some reason there is an area near your eye that equalises in 99.99% of cases, but not in very rare circumstances, due to some form of blockage, due to a cold, snotty goo getting somewhere ???

good luck, and let us know what the diving doctor says.

alun