Clinical Validation of iCare IC1000 Tonometer

Inclusion Criteria: * Age ≥ 18 years Exclusion Criteria: * Subjects with only one functional eye * Subjects having poor or eccentric fixation in the study eye * High corneal astigmatism \>3D in the study eye * Central corneal scarring * History of prior incisional glaucoma surgery or corneal surgery, including corneal refractive laser surgery in the study eye * Microphthalmos * Buphthalmos * Contact lens use within one week of continuous wear and within one hour if lens is worn occasionally * Dry eyes (clinically significant) * Lid squeezers - blepharospasm * Nystagmus * Keratoconus * Any other corneal or conjunctival pathology or infection relevant to this study * Central corneal thickness greater than 600 µm or less than 500 µm in the study eye * Cataract Extraction within last 2 months in the study eye