Comparative Study of the NIDEK TONOREF III with Predicate Devices

Exclusion Criteria

• •1. Subjects with only one functional eye;
• •2. Those with one eye having poor or eccentric fixation;
• •3. Those with corneal scarring or who have had corneal surgery including corneal laser surgery;
• •4. Microphthalmos;
• •5. Buphthalmos;
• •6. Contact lens wearers;
• •7. Dry eyes;
• •8. Lid squeezers - blepharospasm;
• •9. Nystagmus;
• •10. Keratoconus;
• •11. Any other corneal or conjunctival pathology or infection.
• •12. central corneal thickness greater than 0,600 mm or less than 0,500 mm (2 standard deviations about the human mean)