Ocular trauma score como predictor de agudeza visual en pacientes con trauma ocular grave: predictor de pronóstico visual en urgencia oftalmológica / Ocular trauma score as a predictor of visual acuity in patients with severe ocular trauma: visual prognosis in ophthalmological urgency

El objetivo de este trabajo fue determinar la relación entre el pronóstico visual según el Ocular Trauma Score (OTS) y la agudeza visual (AV) a los 6 meses de ocurrido el trauma ocular, en pacientes atendidos en la Unidad de Trauma Ocular del Hospital del Salvador, Santiago de Chile. Se hizo uso de un estudio descriptivo, longitudinal, retrospectivo. Se accedió a los registros clínicos de pacientes atendidos por trauma ocular grave entre el 1 de enero de 2014 al 15 de marzo 2015. 145 pacientes conformaron una muestra de 153 ojos. Se estableció la relación entre OTS obtenido y la AV a 6 meses del trauma mediante el coeficiente de correlación de Spearman. De los ojos estudiados, el grupo mayor N=68 (44,4%) calificó para OTS 3 y el menor N=16 (10,5%) para OTS 1. Se presentaron cinco categorías de visión, en un tiempo inicial la mayoría de los casos presentaron AV de luz, mala proyección-cuenta dedos (n=89). Tras seis meses dicha distribución se desplazó hacia la categoría 20/40 - 20/20 (n=68). Se encontró una fuerte asociación (r=0,711 p=0,000) entre el OTS calculado y la AV luego de seis meses de seguimiento. El OTS demostró poseer un gran valor predictivo y es una herramienta aplicable en nuestro medio, los datos obtenidos indican que existe un mejor pronóstico visual que los obtenidos en otro estudio. Cabe destacar que es la primera instancia en que se evalúa la aplicación del OTS en Chile.

This work aimed to determine the relationship between the visual prognosis according to the Ocular Trauma Score (OTS) and visual acuity (AV) 6 months after the ocular trauma in patients treated at the Eye Trauma Unit from the Hospital del Salvador, in Santiago, Chile. A descriptive, longitudinal and retrospective study was performed. We accessed registers of clinical patients attended for severe eye trauma from 1 January 2014 to 15 March 2015. 145 patients constitute a sample of 153 eyes. A connection was established between the OTS obtained and the AV 6 months after the trauma via the Spearman correlation coefficient. From the eyes studied, the greatest group N=68 (44.4%) qualified for OTS 3 and the smallest N=16 (10.5%) for OTS 1. Five eye categories were presented, in the beginning, most of the cases presented visual acuity with bad projection ­ hand motion (n=89). After six months of distribution, it moved to the category 20/40 ­ 20/20 (n=68). A strong relation (r=0,711 p=0,000) was found between the estimated OTS and the AV after six months of tracking. The OTS proved to have great predictive valor and is an applicable tool in our area, the data obtained showed that there is a better visual prognosis than the obtained in other studies. It is worth noting that this is the first stage where the application of OTS is assessed in Chile.

Satisfacción usuaria en urgencia oftalmológica: evaluación de la consistencia interna y validez de constructo de un instrumento aplicado en Chile / Evaluation of an instrument assessing the satisfaction of ophthalmological emergency service users in Chile

Background: Ocular trauma is a distressing condition feared by the general public. Aim: To evaluate the construct validity and internal consistency of an instrument to measure the level of user satisfaction in patients treated at an Ocular Trauma and Ophthalmological Emergency Unit. Material and Methods: A survey to measure user satisfaction was applied to patients consulting at the Ocular Trauma Unit in a public hospital on April 2014. Internal consistency and construct validity from the estimated Cronbach alpha coefficient and factor analysis were assessed. Results: Surveys answered by 138 patients aged 45 ± 15 years (93% men), were analyzed. The reliability obtained for the final questionnaire was 0.88. The factor analysis yielded four factors responsible for explaining 74.1% of the total variance, related to “quality of clinical information”, “treatment by health care personnel”, “lighting conditions, environment and noise” and “waiting time and overall assessment of service”. Conclusions: These results allow to consider the instrument as a useful and reliable tool that can be applied to ophthalmological emergency service users in Chile.