LOL longblades, that must be hilarious to watch. They are all different.
I think when I saw Tiger walking down the side of my bed to get off as well as using his paw to drink, the blinking and the change in his personality from a cat that liked to make strange with everyone, to a very friendly cat, was when I really thought he was going blind. It was everything together, not just using his paw to drink, that made me think his sight was poor. Of course there is no way to know exactly how good his vision really is, but at least we know his pupils react to light normally and his eye is normal with an opthalmoscope, leads me to believe his vision is relatively normal. He still blinks much more than my other cats so he may have a sensitivity to light but that is all.