Patients with history of ocular surgery within the last 3 months

Corneal or conjunctival abnormality hindering contact lens adaptation

Severe dry eye

Secondary forms of OAG

Patients with systemic hypertension

Patients with allergy to corneal anesthetic

Patients with contraindications for silicone contact lens wear

Wear of full frame metallic glasses during Triggerfish® monitoring

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

Simultaneous participation in other clinical research

Relationship Between 24-hour IOP Pattern and the 24-hour Blood Pressure Pattern in Patients With POAG