Eyes long term cause most injurys to the Body, because they cause imbalance of action and movement. Probably in a lot of circumstances through walking Gait certainly through running gait. I find it interesting that on a running track, it doesnt do left eyed people much good running Bends trying to stabalise there gait with the weak side, Tracks are not made for left sided people, only rightsided which there are 9 times more off. Ill be putting something on here in the next couple of weeks which seems to have solved the problem, You can actually run with your eyes shutt, and work on feel and touch while running, giving better hip stability.