I am not an optometrist, I am a dentist - But I applied to Optometry school also, the same year I applied to dental school.
I had around a 3.5 gpa and scored well on the OAT - 340 math, 340 Reading, 350 Bio, 380 organic, 360 physics and around 360 overall.
I was not accepted to Optometry School - although I only interviewed at Ferris. They questioned me about applying to other professional programs and I was truthful and said I had also applied to dental school. I was waitlisted. Honestly, I think optometry is a great profession and I probably would have chosen it over dentistry at that time - but I am happy with being a dentist.
The point of this post is I don't think high OAT scores are that important to being accepted or are high gpas. Just show enthusiam and interest for optometry.