Materials and Methods: Forty-six eyes of 46 patients who underwent cataract surgery in our clinic were included in this retrospective study. Two groups were formed. Group I consisted of 21 diabetic patients and as the control group, group II consisted of 25 non-diabetic patients who had similar demographical features and underwent surgery at the same period. The demographic data and full ophthalmologic examinations of all patients in each group were recorded. Preoperative and on postoperative 1^st day, and at 2^nd, 4^th, 14^th weeks, central macular thickness (CMT) and total maculer volume (TMV) values were measured by OCT.

Results: Macular thickness and volume were measured by OCT preoperative and on postoperative 1st day, and at 2nd, 4th, 14th weeks. In group I, macular thickness values were 205.29±18.2 μm, 208.81±19.4 μm, 218.24±19.3 μm, 232.86±14.8 μm, 239.1±11.3 μm respectively. In group II, macular thickness values were 202.52±15.6 μm, 204.12±15.5 μm, 217.32±15.3 μm, 223.08±16.3 μm, 224.28±16.7 μm respectively. Increase of CMT was statistically significant in both groups. However, no statistically significant difference was found between the two groups when compared to each other.

Conclusion: After uncomplicated phacoemulsification surgery in both groups, CMT and TMV values showed a statistically significant increase. However, increase of CMT and TMV was similar in both groups and was not statistically significant. After phacoemulsification surgery, increase in macular thickness should be kept in mind. Our study shows that diabetes mellitus does not provide an additional increase in macular thickness and volume. Keywords : Diabetes mellitus, phacoemulsification, macular thickness, optical coherence tomography