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  JOTHOMAS@va*.va*.ed* (JD Thomas) wrote (Subject: contacts):-

> I wear contacts normally and do all or most of my recreational diving with
> them in, as I do not have a prescription mask. I also wear them when doing
> more advanced diving, and have never had a mask flood with them in, I know
> if I open my eyes during a mask flood they'll come out though. My question
> is, does any one have an experience with getting flooded
> with contacts in?...what if somehow they slip partially out of your eye? ...

  They likely will come out if you use those silly little `corneal' contact
lenses which are so easy to lose. I dive with the big sort of contact lenses
called `scleral', which extend well under the eyelids and stay in. I have
flooded my mask or taken it off underwater n times with them in, and the
contact lenses stay in, and stop the salt water from stinging my eyeballs.
  I have heard of attack frogmen, to avoid risk of enemy searchlights shining
off mask eye-windows, diving with [presumably mouthpiece and noseclip, or an
air-pilot-type mouth-and-nose breathing mask, and] no diving mask but scleral
contact lenses designed to counteract the refraction change caused by the
eyeballs being submerged. In the human eye in air, most of the refraction
happens at the surface of the cornea: the lens is mostly for fine adjustment.

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