Hemsworth’s recent interview with CinemaBlend had him talking about how uncomfortable it was to film with a physical eyepatch, so much so, it was replaced with a CG one.
“It was… yeah, I remembered being… with the eyepatch, the story unrolling, ‘Yeah, cool, this is interesting,'” said Hemsworth. “And then the day that we put the eyepatch on I was like, ‘This is ridiculous.’ The thing kept falling off, and we didn’t have the thing [gestures an eyepatch strap]. So it became a CG eyepatch, which I was stoked about… But I’m happy with that trade [for the wig]. It has its downsides. But the upside is that it’s an hour less in hair and makeup without the wig on,” he continued.
It appears that Thor will not have the vision in his right eye restored for Infinity War after all, and that most likely will go double for his golden locks. His hair will remain lost in Sakaar to Stan Lee’s humorously sadistic barber character cameo.