With an abaya, if a woman wants to cover her entire face, including her eyes, she will either wear a special abaya that goes over her head or a niqab that has a special sort of flaps that come down over the eyes, or she will wrap her tarha in such a way that she can toss the end of it completely over her face (yes, this obstructs her view somewhat, but she can still see???a single layer of a tarha