haha! it must look pretty funny to see him winking!
just wondering, does he blink a lot? my turt doesn't blink all that much, just when he's coming out of the water. if he's blinking a lot then you might want to check out his eyes, otherwise i wouldn't worry too much. check for puffiness around the eyes. if it's a matter of puffy eyes then just boost his vitamin A with some carrots and the like. i actually was just researching on this for my own turt and he loves carrots.
no worries, i'm sure that it's fine.