vitreoretinal surgery

Hi, I am 19 years old living in America and have two options in terms of medical school, and I'm unsure of which will be better. My first option is a standard medical school track, 4 years undergraduate (I am currently about to start my first year of college), and then 4 years med school...

I'm trying to figure out what I'd want to go into in medicine in the long run, and am having a hard time comparing all the factors of the two fields I'm most interested in (vitreoretinal and neurosurg) because I can't find a lot of reliable info out there. I've shadowed both, and enjoyed them...