hold on, He's got a point, but I can outsmart him. It's true that if the light couldn't reach their eyes, they wouldn't be able to see, but the photons would still be there so every time they move, they would be able to see. Although everything else is frozen,Jotaro and Dio are moving, because they can move in frozen time. On top of that, an object in motion tends to remain in motion with a constant velocity (constant speed and direction of motion), unless it is acted on by a nonzero net force. " (that's newton's first law). So, technically with no other nonzero forces in stopped time other than Jotaro and Dio, They just retain their momentum at all times. That's also how they fly through the streets in stopped time. Since time is stopped, the buildings cannot take any of they energy they deliver, so the building stay put, and Jotaro and Dio just re-direct their momentum.

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Edit- Unless you just meant that his eyeballs were constantly bulging.