I know that your major doesn't "matter" as Long as you have the pre requisites. I'm torn on whether i want to major in microbiology, for the sake of being beneficial and i somewhat enjoy biology, or earth and environmental sciences, which I absolutely love. There isn't a gurantee that I'll get in optometry school of course, and I do not want to be stuck with a microbio degree I'd much MUCH rather be stuck with a earth and environmental science degree. However, I feel like I'm at a disadvantage if I do earth and environmental sciences, like I feel when they look at my major they'll think "oh that's odd" or something, am I wrong to feel this way? Any help would be appreciated . Also, how much volunteer hours should I try to aim for?