Comparative Study of Specular Microscopes for Endothelial and Corneal Cell Measurements

Inclusion Criteria

• •Male or female subjects from 18 to 80 years old who have full legal capacity to volunteer on the date the informed consent is signed;
• •Subjects who can follow the instructions by the clinical staff at the clinical site, and can attend examinations on the scheduled examination date;
• •Subjects who agree to participate in the study.
• •Male and female subjects from 29 to 80 years old who have full legal capacity to volunteer on the date the informed consent is signed;
• •Subjects who can follow the instructions by the clinical staff at the clinical site, and can attend examinations on the scheduled examination date;
• •Subjects who agree to participate in the study;
• •At least one eye with any of the following conditions:
• •* History of post-op surgical trauma including Pseudophakic or Aphakic bullous keratopathy;
• •* History of corneal transplant;
• •* Physical injury or trauma to the cornea;
• •* Long term Fuch's dystrophy/Guttata (and other corneal endothelial dystrophies)
• •* Keratoconus;
• •* Long term PMMA contact lens use (greater than 3 years).