Narrow iridocorneal angle or any other concomitant ocular conditions (except cataract) in the study eye

History of ocular surgery on the study eye (except cataract extraction)

History of laser treatment on the study eye

Corneal or conjunctival abnormality in the study eye, precluding contact lens adaptation

Severe dry eye syndrome

Subjects with irregular sleep schedules

Subjects who are current smokers

Subjects with allergy to corneal anesthetic

Subjects with contraindications for silicone contact lens wear

Subjects not able to understand the character and individual consequences of the investigation

Participation in other clinical research within the last 4 weeks

Any other contra-indication listed in the TF user manual

IOP Patterns in Ocular Hypertensive Patients Newly Converted to Glaucoma vs Stable Ocular Hypertensive Patients