Purpose: To assess the prevalence of dry eye disease (DED) and ocular surface conditions in patients before cataract surgery at a tertiary hospital in South Korea.Methods: This retrospective study included 96 eyes of 96 patients scheduled for cataract surgery from March to June 2023. The primary metrics of DED, including the Symptom Assessment in Dry Eye (SANDE) score, tear film breakup time (TBUT), tear secretion (Schirmer test), and ocular staining score (OSS, Oxford grading), were investigated. The proportion of patients with DED was determined according to the Asia Dry Eye Society (ADES) and revised Korean DED guidelines.Results: The patients’ mean age was 65.9 ± 8.3 years, with a mean SANDE score of 55.6 ± 30.5. The mean TBUT, OSS, and tear secretion were 3.5 ± 1.2 seconds, 1.3 ± 0.8 points, and 7.0 ± 5.4 mm, respectively. Among the patients, 85.4% exhibited a SANDE score of 20 or higher, 99% had a TBUT of < 7 seconds, and 88.4% exhibited one or more points on the OSS. According to the ADES and revised South Korean guidelines, 79.2% and 86.5% of patients were diagnosed with DED, respectively. Furthermore, all 96 patients exhibited at least one abnormal dry eye sign, regardless of symptoms.Conclusions: The prevalence of DED in patients before cataract surgery was > 80%, with all patients exhibiting at least one ocular surface abnormality. Therefore, identifying and managing ocular surface abnormalities before cataract surgery is imperative.