Study Summary: This study looks at adults with primary open angle glaucoma (POAG). Glaucoma is a condition where fluid in the eye doesn't drain well, causing increased pressure, known as intraocular pressure (IOP), which can damage eyesight. The study focuses on a specific surgery called goniotomy using a tool named the C-Rex™ Instrument. This surgery helps lower eye pressure. Participants are followed for 12 months after their surgery to collect information on their eye pressure, use of glaucoma medicines, and any problems related to the device used in surgery.

• Duration: The study lasts for 12 months after the surgery.
• Visits: Includes pre-surgery and post-surgery visits for data collection.
• Eligibility: Adults with POAG who have not had recent eye surgery and meet certain conditions can participate.

Note: It's important to check eligibility if interested in participating, considering the specific medical criteria.