Tjohnson,
Depending upon the shotgun model and your budget, a custom stock may be a viable answer.
You are looking for a stock that has an excessive (for most shooters) amount of "cast-off". "Cast" is expression for the alignment of the stock with the barrel when viewed from above. "Cast-on" bends the stock toward the shooter, "Cast-off" takes the stock further from the shooter
When a stock is designed with more 'cast-off', it will bring your face more to the right (as a right handed shooter) and thus place your left eye more inline with the barrel.
DPCOP has a valid suggestion as well, and I have two friends that have learned to shoot "wrong-handed" with good success. One was left handed in a world of right handed guns, the other was a right hander that lost his right eye. Takes awhile though, don't be impatient (I know thats tough, I'm 45 myself).
Sorry to hear of your injury and good luck.
Ed