If you have a degenerative retinal condition like macular degeneration, retinitis pigmentosa or Stargardt disease, then there is a decrease in healthy blood flow to the retina as the degeneration progresses. If your intention is to regenerate your retina and restore vision, you need more than supplements. But, supplements like ginkgo biloba that gently open the circulation in the small to medium size vessels can help in combination with other therapies. Remember, no one supplement or combination of supplements has ever been shown to stop degeneration in the eyes or restore vision. But supplements, together with therapies like microcurrent stimulation, acupressure (needleless acupuncture), eye health exercises, color therapy, stress management, improved nutrition and detoxification together can regenerate damaged tissues and restore vision.