Comparative Study of the Topcon Tonometers CT-800 and TRK-2P and the Haag-Streit Goldmann Manual Tonometer and Topcon SP-1P

Comparative Study of the Topcon Tonometers CT-800 and TRK-2P and the Haag-Streit Goldmann Manual Tonometer (Predicate) to Demonstrate Conformance to ANSI Z80.10-2014 Ophthalmic Instruments - Tonometers, to the FDA Guidance for Industry and FDA Staff, Tonometer-Premarket Notification [510(k)] Submissions, and to the Applicable Supplemental Information Sheet and Comparison of Pachymetry Values for Topcon TRK-2P With the Topcon SP-1P (Predicate)

The study will assess the CT-800 and TRK-2P for conformity to ANSI Z80.10-2014 Ophthalmic Instruments - Tonometers, to the FDA Guidance for Industry and FDA Staff, Tonometer-Premarket Notification [510(k)] Submissions, and to the applicable Supplemental Information Sheet. This clinical device study will also assess the substantial equivalence of TRK-2P to a predicate device in regard to pachymetry.

Inclusion Criteria:

1. be at least 18 years of age of either sex and any race or ethnicity;
2. be willing and able to provide written informed consent prior to any study procedures being performed;
3. be willing and able to follow all instructions and attend all study visits;

Exclusion Criteria:

1. have only one functional eye;
2. have poor or eccentric fixation in either eye;
3. have corneal scarring or have had corneal surgery, including corneal laser surgery in either eye;
4. have microphthalmos in either eye;
5. have buphthalmos in either eye;
6. be a contact lens wearer, meaning having worn soft contact lenses within the past 3 months and/or rigid permeable gas lenses within the past 6 months;
7. have dry eyes, meaning having been diagnosed by a physician with dry eyes and currently using a prescribed medication or daily use of an artificial tear;
8. be a lid squeezer - blepharospasm;
9. have nystagmus in either eye;
10. have keratoconus in either eye;
11. have any other corneal or conjunctival pathology or infection in either eye;
12. have a condition or a situation, which in the Investigator's opinion, may put the subject at increased risk, confound study data, or interfere significantly with the subject's study participation.