Please assess the completion status of the following clinical trial:

Trial Title: A 12 Month Core Study to Assess the Efficacy and Safety of Ranibizumab (Intravitreal Injections) in Patients With Visual Impairment Due to Diabetic Macular Edema and a 24 Month Open-label Extension Study

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE3
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Visual acuity impairment~* Diabetic macular edema in at least one eye~* Type 1 or type 2 diabetes mellitus~* Medication for the diabetes treatment must be stable for the last 3 months~Exclusion Criteria:~* Patients with uncontrolled systemic or ocular diseases~* Laser photocoagulation in the study eye for the last 3 months~* Any history of any intraocular surgery in the study eye within the past 3 months~* Blood pressure \> 160/100 mmHg~Extension Inclusion Criteria:~-Completion of the Core Study

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

Study Arms:
- Ranibizumab 0.5 mg (Type: EXPERIMENTAL): Ranibizumab 0.5 mg was administered monthly by intravitreal injection in the study eye for 3 months. After the third injection, treatment was suspended if either one of the following criteria was met:~Improvement in best corrected visual acuity (BCVA) could not be attributed to treatment at the last 2 visits, in the opinion of the investigator, or BCVA \> 84 letters (approximate Snellen equivalent of 20/20) was observed at the last 2 last visits.~Patients also received sham laser treatment on Day 1 and subsequently at intervals of at least 3 months, if deemed necessary by the evaluating physician.~Active/sham laser treatment was always administered before (sham) intravitreal injections. The minimum interval between the 2 treatments was 30 minutes.~In the extension study at the investigator's discretion, patients received open-label ranibizumab 0.5 mg intravitreal injections once a month until stable vision was reached (a maximum of 24 injections) and could receive laser therapy.
- Ranibizumab 0.5 mg + laser (Type: EXPERIMENTAL): Ranibizumab 0.5 mg was administered monthly by intravitreal injection in the study eye for 3 months. After the third injection, treatment was suspended if either one of the following criteria was met:~Improvement in best corrected visual acuity (BCVA) could not be attributed to treatment at the last 2 visits, in the opinion of the investigator, or BCVA \> 84 letters (approximate Snellen equivalent of 20/20) was observed at the last 2 last visits.~Patients also received active laser treatment on Day 1 and subsequently at intervals of at least 3 months, if deemed necessary by the evaluating physician.~Active/sham laser treatment was always administered before (sham) intravitreal injections. The minimum interval between the 2 treatments was 30 minutes.~In the extension study at the investigator's discretion, patients received open-label ranibizumab 0.5 mg intravitreal injections once a month until stable vision was reached (a maximum of 24 injections) and could receive laser therapy.
- Laser (Type: ACTIVE_COMPARATOR): Laser photocoagulation treatment was administered on Day 1 and at intervals of at least 3 months, if deemed necessary by the physician. Patients also received monthly sham intravitreal injection in the study eye for 3 consecutive months. After the third injection, treatment was suspended if either one of the following criteria was met:~Improvement in best corrected visual acuity (BCVA) could not be attributed to treatment at the last 2 visits, in the opinion of the investigator, or BCVA \> 84 letters (approximate Snellen equivalent of 20/20) was observed at the last 2 last visits.~Active/sham laser treatment was always administered before (sham) intravitreal injections. The minimum interval between the 2 treatments was 30 minutes.~In the extension study at the investigator's discretion, patients received open-label ranibizumab 0.5 mg intravitreal injections once a month until stable vision was reached (a maximum of 24 injections) and could receive laser therapy.

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