Please assess the completion status of the following clinical trial:

Trial Title: Preoperative Ketorolac for Pain Control in Scleral Buckle Surgery

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: SUPPORTIVE_CARE
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~1. consent of the patient or legal guardian~2. 18 years or above~3. normal height and weight~4. ASA class I, II~5. elective surgery~6. surgery time within 60min~7. understanding of the verbal numerical rating score (0-10)~Exclusion Criteria:~1. history of ocular surgery, trauma or infection~2. intraoperative complications~3. glaucoma or ocular hypertension (\> 20 mmHg)~4. diabetic retinopathy~5. diagnosis of asthma or coagulopathy~6. chronic pain syndromes~7. history of peptic ulceration, liver or hematologic disease~8. history of chronic use of analgesics, sedatives, opioids or steroids~9. history of drug or alcohol abuse~10. history of systemic disease~11. sexually transmitted disease (STD)~12. Pregnancy, lactation;~13. cognitive impairment or psychiatric illness;

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

Study Arms:
- Ketorolac Tromethamine (Type: EXPERIMENTAL): On operation day, the patients were randomly assigned to receive intramuscular Ketorolac 60-mg 30 minutes before scleral buckle surgery.
- placebo (Type: PLACEBO_COMPARATOR): On operation day, the patients were randomly assigned to receive placebo before scleral buckle surgery.

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