"However, the muscles of the eyes are not amenable to direct physical re-training since, according to Kinesiological research made in the U.S.A., stressed or fatigued muscles are made weaker by exercise. It is therefore not part of the Bates Method to 'strengthen' eye muscles by exercising them, despite recommendations given in popular books and articles on the subject. Relaxation will always precede exercise."
I'm willing to believe palming is enough, thank you.
Wax Frog, the book was written in 1920. Bates method - Wikipedia, the free encyclopedia Bates Method Information
The original book can be read/downloaded here: Imagination Blindness - Perfect Sight Without Glasses