Vision problem at depth?

I've noticed I seem to find it difficult to read instruments/compass at
a depth of more than around 6m, even using a torch. The instruments seem
a bit blurred. I wear contact lenses. Has anyone else had this problem,
might it be related to contact lens use? Would prescription goggles be a
better idea?

Regards, Barry.

BarryNL wrote

> I've noticed I seem to find it difficult to read instruments/compass at
> a depth of more than around 6m, even using a torch. The instruments seem
> a bit blurred. I wear contact lenses. Has anyone else had this problem,
> might it be related to contact lens use? Would prescription goggles be a
> better idea?

I can make a number of guesses:
1. Have you tried diving without your contacts? Some people that need
glasses on the surface can get away without them underwater.
2. You may be experiencing effects of mask squeeze which can, in turn,
change the shape of your eye, making your correction a bit less perfect.
3. You might be getting a bit of fog on the portion of your mask that you
look at your guages through (unlikely, but who knows).
4. You might find a perscription mask solves all your problems.

Good luck.

Lee

> I've noticed I seem to find it difficult to read instruments/compass at
> a depth of more than around 6m, even using a torch. The instruments seem
> a bit blurred. I wear contact lenses. Has anyone else had this problem,
> might it be related to contact lens use? Would prescription goggles be a
> better idea?
>
> Regards, Barry.

I dive in contacts, never had a problem like that. Might be worth a quick
call to the Diving Diseases Research Centre http://www.ddrc.org/ - just to
see if there are any physiological problems this could be a symptom of.
Otherwise... Fog in mask? try swirling a little water around... Fog in
consol? If they are soft lenses, then I don't see that 6m of pressure would
do anything to their shape...

Good luck!

Graham


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Would gas perm lenses be affected by the increased pressure beloiw 6m
?

BarryNL <barry@nospam.nl> wrote in message news:<3F5BACB9.60303@nospam.nl>...
> I've noticed I seem to find it difficult to read instruments/compass at
> a depth of more than around 6m, even using a torch. The instruments seem
> a bit blurred. I wear contact lenses. Has anyone else had this problem,
> might it be related to contact lens use? Would prescription goggles be a
> better idea?

Yes.
I don't know.
I'd give it a try.

I'd also see my eye doctor and describe the problem you say you are
having. Glaucoma is influenced by pressure within the eye chamber.
Perhaps you need to have that checked.

Hi Graham
It's the same for me
Old age is apparently starting to send me long sighted as well as already
being horribly long sighted, for which I wear glasses or lenses & dive in
them as I have for the last 12 years. I spoke to my optician & she
suggested the increased pressure may be making the fine adjustment needed
more difficult & exaggerating the problem - which I don't notice on land.
I have solved this by putting a small lens knicked from a cheap pair of
'menu reading glasses' in one of my mask lenses as it's not bad enough to
warrant a whole pair of specs or special mask, for me at least. I have
chosen to put this in the eye which is not corrected for long sight so
you'd need to know which is the worst eye for you. I've changed my computer
arm to match.
It's worth a try........if a bit 'Heath Robinson'
Regards
Hilary


The pressure
"Graham Gowland" <gowlandREMOVE@bigfoot.com> wrote in message
news:XoW6b.12818$Ci1.1814740@newsfep2-win.server.ntli.net...
> > I've noticed I seem to find it difficult to read instruments/compass at
> > a depth of more than around 6m, even using a torch. The instruments seem
> > a bit blurred. I wear contact lenses. Has anyone else had this problem,
> > might it be related to contact lens use? Would prescription goggles be a
> > better idea?
> >
> > Regards, Barry.
>
> I dive in contacts, never had a problem like that. Might be worth a quick
> call to the Diving Diseases Research Centre http://www.ddrc.org/ - just to
> see if there are any physiological problems this could be a symptom of.
> Otherwise... Fog in mask? try swirling a little water around... Fog in
> consol? If they are soft lenses, then I don't see that 6m of pressure
would
> do anything to their shape...
>
> Good luck!
>
> Graham
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.515 / Virus Database: 313 - Release Date: 03/09/2003
>
>

"Llama Vision" <dannyllama @ yahoo.co.uk> wrote in message
news:qqdolv8bjlucm752v63bra7l65f7dvrtnr@4ax.com...
> Would gas perm lenses be affected by the increased pressure beloiw 6m
> ?

We had a diver 7-8 years ago that came up and said they were bent, as they
couldn't see properly.

The D.O ask if they had contacts, which they did, and that they were "Hard"
non-perm ones. What the diver had, was bubbles behind the glass.

Taking them out and repalcing with normal glasses rectified the problem.

Perscription lenses are a better bet if you need help seeing things.

mattD.

Lee Bell left this mess on Mon, 08 Sep 2003 03:02:37 GMT for The Way to clean
up:
>
>BarryNL wrote
>
>> I've noticed I seem to find it difficult to read instruments/compass at
>> a depth of more than around 6m, even using a torch. The instruments seem
>> a bit blurred. I wear contact lenses. Has anyone else had this problem,
>> might it be related to contact lens use? Would prescription goggles be a
>> better idea?
>
>I can make a number of guesses:
>1. Have you tried diving without your contacts? Some people that need
>glasses on the surface can get away without them underwater.
>2. You may be experiencing effects of mask squeeze which can, in turn,
>change the shape of your eye, making your correction a bit less perfect.
>3. You might be getting a bit of fog on the portion of your mask that you
>look at your guages through (unlikely, but who knows).
>4. You might find a perscription mask solves all your problems.
>

5. Your gauge protector might need cleaning or replacing.

Tao te Carl

"It takes a village to have an idiot." - Carl (c) 2003