An eyepatch would make you look like a pirate... Arggggh!!! But 3d movies would be out... :-)

(I actually use an eyepatch for astronomy when there is stray light around that can affect my night vision...) But I also close one eye while viewing a scene, and do the framelines thing with my fingers, to view in 2d, like your one-eyed monster (camera) sees...

But seriously, you (or anyone) will have a dominant eye, and you can adapt your VF viewing to that eye with most (but not all) cameras... Try to find a way that both eyes can be open so one sees through the VF, while the other sees around the camera to see if anything is entering (or leaving) the frame... With enough practice, the eyes will merge, but there will be framelines in your IC...

Steve K