tia... no cause found

Hi! I had a TIA on the 7th where I lost vision in my left eye. My vision has since come back but I'm scared because they can't rule out a cause. I'm so scared of a full stroke.

Are there any specific tests that you all recommend that may help with finding the root cause and prevent a full blown stroke? Any advice?

I am currently dieting and exercising.

Thank you so much 💗