92nd International Conference on Light and Vision

May 14-17, 2025 Loews Ventana Canyon Resort

Tucson, Arizona

Need a Syntonics Practitioner?

Use our Locate a Practitioner Map 

Master Class

Virtual Meeting

Sunday, February 18, 2024

Syntonics, or optometric phototherapy, is the branch of ocular science dealing with the application of selected light frequencies through the eyes. It has been used clinically for over 80 years in the field of optometry with continued success in the treatment of visual dysfunctions, including strabismus (eye turns), amblyopia (lazy eye), focusing and convergence problems, learning disorders, and the after effects of stress and trauma.

Looking for a practitioner in your area that offers Syntonic light therapy?  Use our interactive map to locate practitioners who are members of the College of Syntonic Optometry. Search your zip code or address for a local Syntonics practitioner, or browse the map to see our members around the world.

Learn about how Syntonic Phototherapy may be today’s most advanced clinical science in light therapy. Since the 1920’s it has been used effectively by optometrists to treat patients who have inefficient visual function.  Also, learn which common visual symptoms are treated by Syntonic Phototherapy.