Welcome to the club!
If your prescription is good, you will be shocked by how much easier it is to see stuff, and your shooting will improve. And, indeed, when you get them made, have the lenses made of shatterproof glass for extra eye protection. Talk to your lens maker about the pros and cons of the various sorts. In the field, well, you should be wearing high vis head gear or protection from the sun, which will keep moisture off the lens.
You need to have something to clean the lens in the field. I have a nice shamagh that I got overseas which is lovely soft cloth and ideal to keep clean.
Finally, always, always, have a spare set in your vehicle. If you bust or loose your specs, you are in trouble.
Hope this helps.
Currently...Sako TRG 22, Model 29 .44 Magnum, Beretta M9 9mm, Beretta Neos, Colt AR 15 x 2, VQ 17 M2, Anchutze .22 hornet, the ultimate 10/22, LOTS of M1 Carbines.
"Beware of the Man with one gun...he probably isnt into guns enough to be safe with it".