Prospective, Open Label Study to Assess 24hs IOP Recorded With Triggerfish® in Patients With OAG Before and After DSCI

Inclusion Criteria: * Diagnosis of Open Angle Glaucoma (OAG) * Documented glaucomatous Visual Field damage with MD more negative than -2 dB * Progressing glaucomatous damage justifying a deep sclerectomy with collagen implant (DSCI) * Aged ≥18 years, of either sex * Not more than 6 diopters spherical equivalent on the study eye * Have given written informed consent, prior to any investigational procedures Exclusion Criteria: * • History of ocular surgery within the last 3 months on the study eye * History of ocular laser treatment on the study eye * Corneal or conjunctival abnormality precluding contact lens adaptation on the study eye * Severe dry eye syndrome on the study eye * Patients with allergy to corneal anesthetic * Patients with contraindications for silicone contact lens wear * Patients 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 SENSIMED Triggerfish® user manual