waketosleep: signboard saying 'I have seen the truth and it doesn't make sense' (Default)
waketosleep ([personal profile] waketosleep) wrote in [personal profile] amalthia 2014-05-10 01:35 am (UTC)

Speaking as someone who worked in optical...

I've never sold Rx scuba goggles but I have sold Rx safety glasses and sports goggles. The problem with the insertable lenses and astigmatism tends to be that the mini-frame that holds the lenses pops into place in the actual mask, and it will frequently do this by bending in the bridge. Those lenses can't be done as aspheric (ie. with astigmatism correction) because you'll fuck up the axis as soon as you bend the frame to fit the lenses in the mask/goggles/whatever; it changes the axis of the lens on you and then you can't see clearly and maybe get headaches. So if you're getting the kind that snap into a mask, you'll need a snap-in frame that is rigid.

Alternatively, if your Rx for astigmatism is mild (like under +/-2.00 cyl), get your optometrist to write you a new Rx for a spheric lens, specifically for your scuba mask. Then you can fill that. Most optometrists shouldn't really have a problem doing that for the reason you want it; it doesn't make sense that they would.

Hopefully that helped some?

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