Design of eyewear....

Im a product design student in need of some user research.

Currently i'm designing eyewear for you guys (golfers)...

Heres what i need to know:

Is peripheral vision an important part of the game?

Or is it important when putting etc. that you have no distractions....

Do you prefer wrap around shades or other types?

And it's important that they feel secure?

Why (if not) wouldnt you wear anything on your eyes?

Thanks, Dan