Please assess the completion status of the following clinical trial:

Trial Title: Evaluation of Blood Flow Characteristics in Glaucoma Using Optical Coherence Tomography Angiography (OCT-A).

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Diagnosis of open angle glaucoma (OAG) including pseudo-exfoliative and pigmentary glaucoma.~* Documented glaucomatous visual field damage (in the previous 12 months with mean defect (MD) \> 2.0 dB)~* Structural and/or functional glaucomatous damage~* Have given written informed consent, prior to any investigational procedures~Exclusion Criteria:~* Patients with allergy to corneal anesthetic~* Patients not able to understand the character and individual consequences of the investigation~* Participation in other clinical research within the last 4 weeks~* Other diseases that may cause visual field loss or optic disc abnormalities~* Refractive error of \> +3.00D or \< -7.00D

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Longitudinal arm (Type: None): Evaluate optic nerve head blood flow using the new OCT-A software in surgically and medically treated glaucoma patients and in different types of glaucoma
- 24-h Intraocular pressure (IOP) arm (Type: None): Evaluate the correlation between circadian IOP changes and optic nerve head blood flow using the new OCT-A software
- Surgery arm (Type: None): Evaluate blood flow using the new OCT-A software in surgically treated glaucoma patients

Based on this trial design, predict the completion outcome and termination type (if applicable).