Sunglasses for migraines and tired eyes - how to find ones when can’t get to shops

I find that light can really affect me and also get migraines and headaches as well as ‘almost there’ states where I’m squinting

I want to get some new comfy sunglasses that will fit close to forehead and don’t leave a big gap where the handles meet a flat main bit but bend a bit and so the light isn’t coming in from the corners either

I tried my opticians and they ordered ones in but they seem to have this issue above whilst a very old pair of cheap bug eye type ones don’t

I just don’t know how to get hold of some new and better (so I could add a prescription ideally to it) ones when the optician is hard enough to get to and then manage to try a few on before collapsing out or getting a migraine from all the taking them on and off with the light

it seems fit to my face is key so I’m realising online I could be there forever without clues of where does ones for a small face or if any brands have sizing etc plus anywhere that actually the glasses but curves to the forehead

and of course another thing that really seems to get me if I have to do it a lot is the online searching itself (particularly when you have to look closely at pics)

can anyone recommend anything that might be useful- whether places that make to measure or have loads in stock and helpful staff (to narrow it down) are worth the one off travel

or any good online offering that is easy to send back and/or has good info on size and shape of glasses

I’d love it if I’ve just missed being aware of something that exists so please do state the obvious

any suggestions welcome!