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To: andy
To: kerslake <andy_kerslake@sm*.re*.co*>
Subject: Re: FFM and Optical Lenses
From: Sten Meyer <m87stme@mt*.ch*.se*>
Cc: techdiver@opal.com
Date: Fri, 30 Dec 1994 19:31:41 +0100 (MET)
On Fri, 30 Dec 1994, andy kerslake wrote:

> Does anyone out there have experience with FFM's and corrective lenses.

Hi Andy,
When I bouht my AGA divator "MK I" serise 3 FFM this spring I spent
an evening trying to adopt a pair of my old glasses to fit in the mask.
The result of this experiment was that I managed to drop them in the floor.

So my next step was to try the mask with my ordinary glasses. The result
is good. There is just a small tendecy for air to enter the hood. The
main problem is that I have to fiddle a bit with the inner mask to get it
to fit under the glasses. If the mask seal is bad there is a tendency for 
moist, expiered, air to fog the glasses. The ordinary defroster in the mask
works well if the inner mask is tight.

My current glasses are 130 mm wide and 35 mm high. The are about -9 so
I do need them.

Regards, and a happy new year.

/Sten Meyer                   m87stme@mt*.ch*.se*

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