Basically, what Glyn said.
Except, personally, I like the glimmer of light eclipsing dark; the inversion works for me.
I'll add to the list: His eyes wandered…? I suspect they are darting rather than wandering, Also, the way that bit is described lacks a sense of reality. His head would turn. His head roll on the ground. He wouldn't just lie there, stretched out. He's probably be half-perched on an elbow by the end of that moment searching for a sign of anything.
And, about three quarters of the way through, there's a double then. It might not look too bad, but the second felt like a fourth, it jarred.
An extra detail I was thinking about last night, before this rewrite. What is the nature of this blindness. Yes, I get that it's magical. But where is the magic working? Is it stopping light from entering his eyes, or stopping any signal from reaching his brain. There is a massive difference; specifically that in the former case, running his eyes would mean he would see spots of some sort.