Robinson, 24, has worn contact lenses at times over the past two years, but opted for a new optical approach this winter and plans to wear his new glasses while he's playing.
"My vision isn't that bad, but you're always looking for an advantage," Robinson said Thursday before heading out to the field for an informal workout. "And I can see a difference. I wore contacts last year on and off, but I was always wondering when I changed the degree of my head, I'd be blind for like a half-second. I've got astigmatisms. That's when I checked in with an eye doctor in Seattle."
A lot of players opt for Lasik eye surgery to correct vision problems, but Robinson isn't sure he wants to go that route yet.
"I'm kind of scared of that," he said. "I've never had surgery in my life and to do it on my eyes? I don't know. I might go see a specialist later on. Not right now, because the glasses look cool, but I'll probably see somebody and see if I need it."
For now, he'll style with the Oakleys.
"I'm just trying to look for a little advantage, a little confidence," he said. "I just want to compete. And look good, too, right?"
He'll look better to the Mariners if he produces at the plate after a rough finish last season when he hit just .162 in the final month after a nice start following his arrival from the Dodgers in the Erik Bedard trade. Robinson isn't blaming anything on his vision, but figures it certainly won't hurt to have a sharper focus at the plate this spring.
"It's not a huge difference, but I notice it," Robinson said. "I feel comfortable. I can see a little difference. I can see the seams a little better. I always could see 'em, but I can see 'em better now.
"You can't hit what you can't see," he said. "It's like they said when we were little kids. ... See the ball, hit the ball. Make it simple."