Eiro slightly rubbed his eye a few times, feeling quite some discomfort, "Is everything alright?" Armodeus asked with a concerned expression, and Eiro looked at him and quickly nodded his head, "Yeah, I'm fine. It just seems like I'll have to be a bit more careful with this than I thought I'd have to be," the Demon replied. He had just spent some time trying out his new ability to duplicate things through his vision, and after a while, it was starting to get a little uncomfortable. It was worth it considering the benefits that this ability had, but there was some negative feedback to it.
Eiro's vision was noticeably reduced after continuing to use the mirror of duplication that was replaced his eye's lens, even if it already seemed to be slowly returning to normal. And even then, his vision had still been quite potent. Considering that Eiro still had the vision through his other eye, as well as all his other senses, this wasn't something that he really had to worry about.