Refractive Errors

• Fishkind, Bakewell, Maltzman, Hunter & Associates Eye Care & Surgery Center — Tucson, Arizona, United States
• Empire Eye & Laser Center — Bakersfield, California, United States
• Harvard Eye Associates — Laguna Hills, California, United States
• Altos Eye Physicians — Los Altos, California, United States

• Xiangui He — Shanghai, Shanghai Municipality, China

• Andover Eye Associates — Andover, Massachusetts, United States

• The Centre of Myopia Ressearch, School of Optometry, The Hong Kong PolyU — Hong Kong, China

• Clinique Beau Soleil — Montpellier, France

• Eye Boutique Optometry — Santa Clara, California, United States

Not specified

• Alcon Investigative Site — Chiyoda-Ku, Tokyo, Japan

• University of Rochester — Rochester, New York, United States

• Department of Ophthalmology; Medical Faculty Carl Gustav Carus; Technical University Dresden — Dresden, Saxony, Germany