In my opinion, you SHOULD see an ophthomologist. They will examine your eyes with a dilated slit lamp exam to make sure there's nothing pathologic going on with your retina or other parts of your eyes that could be affecting your vision. Optometrists miss that stuff all the time, so if you haven't had an eye exam in a really long time, I would recommend an Ophtho. There's actually three spurts in incidence of myopia (nearsightedness). First in young children (me), then in teens around puberty, and then in young adults in the early 20s. So for all of you needing glasses when starting med school, this is normal and physiologic. There are however other things that can cause vision reduction in an early 20-something, so again I recommend an ophthomologist.
Can you tell I'm coming off Ophthomology rotation?
As for me, I could never tolerate contacts, so I've been wearing glasses since age 8. Glasses should cost $100 - $200 with a coupon (Lens Crafters sends these out all the time). Depending on your prescription, light weight lenses can be nice, but don't spend the money on like "ultra light weights", as the last time I looked they offer very minimal weight and size reductions for more money. With prescription sunglasses, refuse glare protection. I've had both kinds and I've never had probs with glare on regular prescription sunglasses AND the polarized lenses aren't as dark so people can still see your eyes (a style thing). I dunno how much a visit to an Ophtho costs these days.
As for Lasik, it's not to be considered until your prescription is stable for a few years. Otherwise, you may end up with glasses again or another surgery. Also, if your nearsightedness is under about -2, when you do become presbyopic in old age you'll probably be able to read and see your computer screen without reading glasses, so it could actually be a good thing. Everyone will need those sorts of glasses eventually as the lens stops accomodating, so Lasik doesn't make you eyeglass free forever...