Well, prescription glasses and sailing., let me tell you..
I have windsurfed for 30 years and always in glasses, - shortsighted, tried contacts but allergic to them ---- bummer

i have lost maybe 20 sets of glasses. Often it does not matter if they are tied on or not-- crash hard enough face first and the lense will pop out !!!! happenned lots, jumps/ freestyle etc.
These days i wear a gath so that helps them stay on a bit, i also have a rubber style band around the back that slips over the arms of the glasses.
I used to have this and a 'safety leash' attached to my wetsuit zipper. ( not used anymore due to gath)
I use sunglasses with Transition lenses ( change shade -- light to dark etc-), I obviously have to wear them summer and winter sailing. It does not effect any spotting of waves/ lumps, sharks !!!! etc.
It would be nice to sail without them but putting contacts in for a half hour sail sometimes is not my thing...
I dont call myself a backwards and forwards sailor as i crash alot with wavesailing and freestyle.
Perhaps the glasses are a good thing all this time as i read in a British mag years ago about the potential for long term damage on the water from not having sun protection , i.e sunnies.
note the cost of prescription lenses can vary a lot, i wish i could buy suunies for $200.00!!! complete. the worse your eyes are usually the more the lenses cost.
The cheapest i can buy a set of lenses for myself are $200 then plus the sunnies of say $150.
Note also that high prescription lenses will not go into any sunnies with any sort of 'wrap' / 'bend' ( i think it is measured in something called base curve). The result would be distortion on the edges of your vision, definately not good with sailing, trust me it has happenned to me when i tried a pair of Oakleys years ago that were only slightly wrap.
Perhaps one day i will have the eye op. but at 45 and having worn glasses for 35 years i think it is not high on my priority.
cheers guys.
