As of the time that I am writing this, here is an exhaustive list of pre-requisite classes for optometry school. Look at the infographic we have along with the ASCO pdf, and always make sure to confirm with the school’s admission department before thinking you don't have to take certain classes. But if you took all of the following classes, you would cover the pre-req list for every school:

Chemistry- 2 courses of general chemistry with lab (1 year equivalent)

Biology- 2 courses of general biology/zoology with lab (1 year equivalent)

Physics- 2 courses of general physics with lab (1 year equivalent)

English- 2 courses of English (1 year equivalent)

Calc- 1 course of calculus or equivalent level math

Anatomy- 1 course of human anatomy (or semester equivalent)

Physiology- 1 course of human physiology (or semester equivalent)

Organic Chemistry- 2 courses, 1 lab

Biochem- 1 course of biochemistry (or semester equivalent)

Microbiology- 1 course of microbiology (or semester equivalent)

Stats- 1 course of statistics (or semester equivalent)

Psychology- 1 course (or semester equivalent)

Total it's about 50-60 credits, depending on your institution, which only takes about 4 semesters if you were crazy and took them all in the fastest time possible. Though some colleges of optometry require a bachelor-level degree, so you would also have to take graduation and major/minor requirements on top of the pre-reqs. Most people take 4 years in school to complete it all, but doing it quicker should always be an option in the back of your mind.

Not all classes are created equal. The same course that would give you the same necessary knowledge and credits for optometry prerequisites, could have a significant impact on your GPA. 

Rate My Professor and other sites could be your saving grace. I once trusted my own intuition on choosing a class. The ratings were horrible, people warned me, but I wanted to take a class from the dean of the college and I thought he was a wonderful person. That class turned out to be the worst decision for my GPA. I ended up getting a flat C in a class that would have been at least a B+ if I would have taken it from any other professor. I took solace in the fact that the class was called ‘advanced physiology’ instead of ‘physiology’, but that’s not the first thing that optometry schools are going to see. 

Make sure to choose the easier classes if they are offered, it will be worth it to change your schedule to fit them; especially if it is a pre-req. A grade from a ‘no-name’ professor who gave you an ‘A’ is worth more than a dean who gave you a ‘C’. This advice works. From community college to Ivy League: trust me, the quality of education will be pretty much the same. Pick the easy ‘A’.