The Availability of Modified Ocular Trauma Score in Korean Patients with Open Globe Injury

ABSTRACT

PURPOSE: To modify the ocular trauma score (OTS) model by analyzing the clinical characteristics of Korean patients with open globe injury and to determine the availability of the modified OTS in predicting the final visual acuity. METHODS: Among the prognostic factors in the original OTS, endophthalmitis and perforating injury were excluded, and wound location, vitreous hemorrhage, lens damage, and lid laceration were added to the modified OTS based on the data of 242 patients with open globe injury from January 2000 to September 2010. To determine the availability of the modified OTS, 29 patients from September 2010 to December 2011, not included in the previous data, were retrospectively reviewed, and the positive and negative predictive values for assessment of final visual acuity less than 0.02 were calculated by the original and modified OTS. RESULTS: The modified OTS was applied to the previous data, and the positive predictive value was 75.3% and negative predictive value was 90.8%. By using the original OTS, the positive predictive value was 70.1% and negative predictive value was 89.8%. The values of the modified OTS was higher than those of the original OTS, but it was not statistically significant (p = 0.5956, p = 0.9370). When the modified OTS was applied to the new 29 patients, the positive and negative predictive values were 75.0% and 90.5%, respectively. CONCLUSIONS: The prognostic factors of the original OTS were modified based on the previous data and the positive and negative predictive values of final visual acuity by modified OTS were similar to those by the original OTS. The modified OTS would be useful in analyzing the patients with open globe injuries and could be used as a prognostic model for Korean patients.