Refractive Errors

• Alcon Call Center for Trial Locations — Fort Worth, Texas, United States

• Nikookari eye hospital — Tabriz, East Azerbaijan Province, Iran

• Durrie Vision — Overland Park, Kansas, United States

• Kerry Assil — Beverly Hills, California, United States

• Ophthalmic Research Center — Tehran, Tehran Province, Iran

• Contact Alcon Call Center for Trial Locations — Fort Worth, Texas, United States

• Laser Focus Sdn Bhd, Vision Correction Centre — Johor Bahru, Malaysia

• Anderson & Associates — Tampa, Florida, United States

• Laser Focus Sdn Bhd, Vision Correction Centre — Johor Bahru, Malaysia
• Asian Eye Institute — Makati City, Philippines

Not specified