After Rose Ann slaps Selina in the beginning of the movie, she moves closer to her face and screams, "Do you feel like wow now?" At this point Rose Ann is about six inches away from Selina yet in the very next shot, she's about two feet away from Selina.
In a number of interior shots where Selina is wearing sunglasses, you can see her eyes and it's apparent that the actress playing the role isn't wearing the foggy contact lenses that made her look blind in non-sunglasses scenes.
When Selina reveals her sexual assault (at the age of 18-19) to Gordon we see her attacker and her struggle through her eyes, which is impossible because earlier she explains the cause of her blindness at the age of five.
When Selina is alone in the park at night the evening Gordon had given her pineapple juice and is inspecting her necklaces in the box right before she disappears behind tree, there is a brief unexplained flash of light from what is probably a camera bulb from a studio photographer taking a publicity shot.