Hi
I understand where you're coming from- especially this year! I'm sure a lot of year 13's are feeling extremely stressed right now
Just try to remember that you are very capable of going to university/studying Optometry. Predicted grades of ABB during a global pandemic is amazing and you should be extremely proud of yourself.
1) I think it's very likely that you'll get offers as predicted grades don't need to match entry requirements- you're only just starting Year 13! Additionally, I think universities know that predicted grades aren't always accurate (especially this year) and that students may do better. You should definitely still apply!
After they've read your application/interviewed you, they may reduce the requirements in your offer. Mine went from AAB to ABB
2) The amount of Biology content in the first year may vary from uni to uni. I would suggest emailing Cardiff uni to explain your situation and see what they think. They'll have a better understanding of how their course is designed and should be able to direct you down the right path
3) Try relating those skills to situations that an Optometrist may be in e.g.
-critical analysis: having to carefully examine what condition a patient has rather than jumping to conclusions
-problem-solving: using various types of information to diagnose patient e.g. eye test results & patient's history
I hope this helps and I'm happy to answer any more questions you have!
Best of luck with your application