To investigate the effect of patterned laser trabeculoplasty (PLT) compared to selective laser trabeculoplasty (SLT) on intraocular pressure (IOP) in treatment naiv patients suffering from open-angle glaucoma or ocular hypertension.

Values for IOP will be measured at baseline, 1 day and 1 month post-interventional as well as 2, 3, 6, 9, 12, 18 and 24 months after treatment.

• Trial with medical device

Inclusion criteria:

• Intraocular pressure (treatment naiv or after 4 weeks wash-out phase) > 21 mm Hg
• visible angle structures over 360° on gonioscopy
• age = 18 years

Exclusion criteria:

• Intraocular Inflammation
• patients who underwent refractive corneal surgery for any reason or who underwent ocular surgery to reduce intraocular pressure (e.g. trabeculectomy)
• monocle situation
• anterior chamber lenses (incl. iris claw)
• secondary glaucoma (with the exception of pseudoexfoliation and pigment dispersion)