Materials and Methods: The study comprised a total of 41 patients. Preoperative data encompassed parameters such as the duration of diabetes mellitus (DM), HbA1c levels, gender, age, best corrected visual acuity (BCVA), central macular thickness (CMT), the severity of TRD. Post-surgical outcomes were regularly monitored for a minimum of 6 months.

Results: The mean age of patients in the 27-G and 25-G groups was 58.04±12.3 and 57.05±8.5 years, respectively. The mean duration of diabetes was 12.42±4.1 years, and the mean HbA1c level was 9.28±2.33 for all participants. The mean operation time was 93.65±20.8 minutes in the 27-G and 72.89±25.5 minutes in the 25-G group (p= 0.007). Significant changes were observed in both groups concerning BCVA and CMT; however, the degree of improvement was noted to be greater in the 25-G group compared to the 27-G group (p<0.05).

Conclusions: In both methods, significant changes were observed in anatomical and functional success. However, in the 25-G group, a notable difference was detected compared to the 27-G group in terms of BCVA improvement and reduction in CMT. It is evident that the utilization of 27-G unimanual PPV is considered a safe and effective approach in TRD surgery. Nevertheless, it is crucial to recognize that in specific cases, there may still be a requirement for the bimanual approach. Keywords : Proliferative diabetic retinopathy, tractional retinal detachment, unimanual and bimanual ppv