Fordward

Never had one of those, but too many miles in a convertible car does give me conjunctivitis.

I asked this same question on another forum where there's a few retro and cruiser riders who wear open face lids and they told me above 60mph they wear goggles.

So what I've learned and it has made a difference for me is not to go above 60mph with the convertible top down (which was probably never a good idea anyway because a stone kicked up from a truck at 80-90mph on the motorway, and hitting you in the head would be like a bullet).

I've never had a problem through my bike riding and I do a lot of mileage, but I do have a good quality full face helmet, the chin vent has a foam filter in it, and the wind blowing into my eyes is pretty minimal.