iarjcrIARJCRIARJCR2789-6064https://doi.org/10.47310/iarjcr.2022.v02i02.007Association between Central Macular Thickness (CMT) and Duration of diabetes in Patients of Type 2 Diabetes Mellitus Present at Ophthalmology OPD of Tertiary Care CenterPunamVinodKashyapJunior Resident, Department of Ophthalmology, Indira Gandhi Medical College, Shimla-171001 (H.P.)Associate Professor, Department of Ophthalmology, Indira Gandhi Medical College, Shimla-171001 (H.P.)Background: The study was conducted to evaluate the association between Central Macular Thickness (CMT) & Duration of diabetes in Patients of Type 2 Diabetes Mellitus present at Ophthalmology OPD of Tertiary Care center. Material & methods: This was a cross-sectional study on type 2 diabetes patients conducted in the department of ophthalmology, Indira Gandhi Medical College Shimla (H.P) for a period of one year. Patients who fulfilled the inclusion criteria were interviewed regarding the duration of diabetes mellitus and treatment history. A complete ophthalmologic examination including Central Macular Thickness (CMT) was performed to all patients. Results: A total of 260 eyes from 130 patients (87 males, 43 females; mean age 56.88±8.26 years) were included in this study. The mean duration of DM was 8.87±2.34 years (range, 1-25 years). In the present study, CMT in right eye ranged from 189–751 μm with mean value of 260.41±101.66. CMT in left eye ranged from 180–561 μm with mean value of 255.69±88.89. A statistically significant and positive correlation was observed between CMT in right eye and duration of diabetes (ANOVA test; p = 0.000). A statistically significant and positive correlation was also observed between CMT in left eye and duration of diabetes (ANOVA test; p = 0.009). Conclusion: Present study concluded that there was statistically significant and positive correlation between CMT and duration of diabetes in both eyes among Patients of Type 2 Diabetes Mellitus present at Ophthalmology OPD.