The ray of light peeking through the crack creates a blinding effect on the subject. The light is so bright that it blinds her vision, covering her eyes in the photo. The black and white filter makes the ray of light even more bright.
Glow: The First Smart Headphones with Laser Light by Glow, LLC — Kickstarter. Feel the beat. Glow merges state-of-the art sound technology, laser light and a heart rate sensor for an experience like no other.