Optometry

I’m planning on studying Optom next yr I’m studying an access to he course in science and haven’t done maths or physics since GCSE about 2-3 yrs ago.my access course has a statistics module but the rest is bio chem. would the physics and maths in optom still be manageable.
Anyone who’s studied or studying optom can you tell me if the physics and maths is as hard as alevels or more difficult is it achievable to understand or learn as I’m not the brightest of people and I’m scared I won’t be able to grasp it.