Are your lenses really made of glass? Glass lenses are pretty rare these days and not of any benefit except in really high prescriptions, and even then the benefit is fairly dubious given modern high index plastic materials.
If your lenses are plastic, then even the cheapest plastic material is pretty impact resistant. The main issue is injury from the frame if it breaks and again there are a lot of impact resistant frames ranging from plastic through to titanium frames.
Contacts are a good plan, they can dry out with the airflow inside a helmet, but everybody is different with their response to contacts so they're worth trying.
Refractive surgery by LASIK shouldn't cause night vision problems these days, but there is a very small complication rate, which can lead to night (and day) vision problems. Previous techniques often left a residual haze in the cornea which was noticeable at night, and/or the correction area was smaller than the pupil size at night.
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