I honestly don't see any difference in this pic. The eyes look the same to me!
Look at the amount of white showing in the inside corner of the eye on each side. If you look at the eye on the right side of the photo, you can see that much more of the eye is covered up, for a much smaller opening. The crescent is much less. Very noticeable to me in this photo. I've never seen a Kanani in person but I guarantee I wouldn't notice it unless it was pointed out. She has a very sweet looking face.