Task: Answer Verification
Input (English): Question: Do long-term efficacy of the Baerveldt 250 mm2 compared with the Baerveldt 350 mm2 implant?
Answer: With a mean follow-up of 40 and 31 months, no differences in surgical success, VA, IOP, number of medications at the last visit, and complication/failure rates were noted between the Baerveldt 250 mm2 and 350 mm2 GDIs, respectively. The size of the GDI may not be associated with surgical outcomes.
Output (English): yes