Shadowing optometrists or working for them will make or break your enthusiasm for the career. I knew I was interested in optometry, but it wasn't until I began shadowing that I became estatic about my possibilities. Now I work for a couple practices as a tech and I can't think of anything else I rather do but attend optometry school and become an optometrist. I'm sure this is the same feeling for many of us future ODs 🙂
Definitely check out different settings like monica mentioned! They are ALL different, and what you see first might not strike you as that interesting (happened to me,) just know that's not how all practices run.
Good luck. 😀