Please assess the completion status of the following clinical trial:

Trial Title: Effects of Lutein in Retinitis Pigmentosa

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE1/PHASE2
- Number of Arms: None

Eligibility Criteria:
None

- Gender: None
- Minimum Age: None
- Maximum Age: None
- Healthy Volunteers: None

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