Human eyes are unusual among primates in several ways, with the idea currently popular that it is so following the gaze of another is easier, thus facilitating social coordination. Unpigmented sclera are rare among primates, though I’m not certain if the feature is absolutely unique to humans or not, and there are other features of the eye that seem consistent with this theory (e.g.).
I don’t know much about the evolutionary theories regarding the epicanthal fold, though I know that they are present in utero in most ethnic groups but then disappear before or shortly after birth in some, and that theh persist in adulthood in widely-separated groups from various parts of the world. Might have some functional significance or might be a neutral trait, I’m really not sure.