Long-term DM predisposes to changes in the tear film causing ocular surface irregularities, which lead to dry eyes. Dry eye is common in patients with diabetes, and the same was proven in our study. The use of the OSDI scoring system is justified in this study. The OSDI questionnaire is an integral part of the examination, and its use should be a benchmark while diagnosing a patient with OSDs as its validity and reliability are unquestionable. The duration of DM plays an important role in ocular surface diseases. This study observed that dry eyes more frequently occur when patients have DM for a longer period. In an ophthalmology clinic, patients with DM should always be evaluated for any ocular surface changes when being screened for diabetic retinopathy, and proper guidelines should be implemented to detect changes in the ocular surface system as early as possible so that any long-term complications may be avoided at an early stage.