I think you should wait until you take it again and see if you can hopefully get a better score your second time around. A lot of applicants do better on their second attempts, myself included.
In my opinion, a lot of schools have a certain GPA & OAT cutoff, and if you don't make the cut then most likely they may not look at the rest of your application. The reason why is because schools want to see that you can handle optometry school and their curriculum. So I think having a better score will give you a better opportunity to get offered an interview. Plus if you have a lower OAT score, a lot of schools may tell you to take it again anyway, one school did that to me. So I think in your case it might be better to wait until you take it again and see if you can do better.
Good luck!