Having one eye is really just a design problem. There's even research that suggests that "Stereoblindness might prove an asset rather than a disadvantage to an artist." Sure, there's prosthesis that look so real no one would ever know you are different, but they could be so much more - an eye for every occasion; abstract, cartoony, solid colors, etc... I could even have it be the ultimate spy camera. Then of course there's eye patches. Black is classic and I do really love simple design, but there's a million different ways you could drape your face to cover that creepy spot. Hairstyles must also be considered. And when I'm feeling bold, there's always going natural. And what about one-eyed glasses?
P.S. My profile picture is me in a costume I made freshman year. I've had it since I made this blog and it's proven oddly predictive. The older I get, the more ridiculous life seems.