Validation of a new system for triage of ophthalmic emergencies: the alphabetical triage score for ophthalmology (ATSO).

ABSTRACT

PURPOSE: To propose a modified ophthalmic triage system based on simple ophthalmic symptoms, signs and anamnestic data and validate its safety and effectiveness. METHODS: Phase 1 of the study was a retrospective review of chart records of patients admitted at the ophthalmic emergencies room (OER); phase 2 was a prospective study conducted on all consecutive patients presenting in the OER between April 1st, 2018, and May 30th, 2018. We selected the following six factors as predictors of urgency levels altered vision, ocular behavior, color, distress, eye trauma, floaters and flashes. ATSO final score can be eventually converted into risk groups low-risk group (scoring 0-3), intermediate-risk group (scoring 4-5) and high-risk group (scoring > 6). RESULTS: A total of 953 consecutive patients who presented to our OER over a two-month period were considered for participation in the study. The male-to-female ratio was 1.241. The mean age of the participants was 53 years (range 18-92, SD 19 years). ATSO score significantly correlated with urgency levels (p < .00001). The sensitivity of ATSO in differentiating urgent from non-urgent conditions was 91.4%, and the specificity was 98.2%. All hospitalized patients (30, 3.15%) have been coded as intermediate/high risk according to the ATSO score. CONCLUSION: The use of the ATSO score for patients at the OER provides the clinician with a reliable predictor of urgency, being at the same time safe and effective. The ATSO score may represent a valuable tool to implement triage of ocular patients in the emergency department.