Astigmatism

• James R. Dugue, Optometrist — Mission Viejo, California, United States
• Scripps Poway Eyecare & Optometry — San Diego, California, United States
• Stam & Associates Eye Care — Jacksonville, Florida, United States
• Pearson Research Center PA — Longwood, Florida, United States

Not specified

• School of Optometry & Vision Science — Waterloo, Ontario, Canada

• Hospital Universitari General de Catalunya — Sabadell, Barcelona, Spain
• Oftalvist Jerez - HLA Puerta del Sur — Jerez de la Frontera, Cadiz, Spain
• Barraquer Ophthalmology Center — Barcelona, Spain
• Institut Catala de la Retina - Sarria — Barcelona, Spain

• Kazakh Eye Research Institute — Almaty, Kazakhstan
• Kazakh Eye Research Institute — Astana, Kazakhstan

• Eurolens Research — Manchester, United Kingdom

• Dr.Elsa Pao, O.D — Oakland, California, United States
• Pacific Rims Optometry — San Francisco, California, United States
• Drs. Giedd, P.A. — Maitland, Florida, United States
• Vision Health Institute — Orlando, Florida, United States

• Gauss Clinic Bacau — Bacau, Romania
• Immunoeye SRL — Sfantu Gheorghe, Romania

• Svjetlost Eye Clinic — Zagreb, City of Zagreb, Croatia
• Narayana Nethralaya Eye Hospital — RajajiNagar, Bangalore, India
• Centre For Sight — New Delhi, National Capital Territory of Delhi, India
• Centro Oculistico Bresciano — Brescia, Italy

• Asian Eye Institute — Makati City, Philippines