Optimal vision is not only determined by the extraocular muscles of the eye. These exercises and stretches have helped with that but now we must focus on the whole body. The foods we eat are another piece of this puzzle and play a large role in healing as well.
Remember that in order to be able to see, our specialized cells (rods and cones) located in the retina must need to function well. After the light hits these receptors they get bleached, these visual pigments need to regenerate in order to keep doing what they need to do. Vitamin A helps that regeneration process.
Vitamin C strengthens the immune system to protect the body from pathogens. It has the same effect on the eyes. Vitamin C acts as an antioxidant that protects the cells in the eyes from damage caused by harmful allergens from the environment. It also promotes healing which helps maintain a healthy cornea and overall eye vitality.