Data on patients' age, gender, systemic diseases, study eye, types and duration of diabetes mellitus, intraoperative diagnosis, and additional surgical procedures such as cryotherapy, scleral buckling [segmental sponge or 360º encircling buckle (Gore-Tex®, polytetrafluoroethylene, W. L. Gore & Associates, Inc., Flagstaff, AZ)], or internal gas (C3F8 or SF6) are recorded. Further data about OCT findings, best-corrected visual acuity at the time of OCT images, and the duration of post-operative follow-up also are compiled. Different morphological appearances of the macula detected by OCT are categorized. These changes are compared between the two surgical subgroups. Correlations of the morphological changes with postoperative visual outcome are conducted.