Evaluation of the impact of a lighting control system on visual comfort in a hospital specimen processing laboratory (#620)

Authors

Cabrera Choccata, Daysy Yanina

Velazco Yañez, Cesar Antonio

Abstract

Visual comfort is a key factor in the productivity and health of workers in sample processing laboratories, where adequate lighting prevents visual fatigue and improves accuracy in technical tasks. This study evaluated the effectiveness of an intelligent lighting control system in the laboratory of HNCASE - ESSALUD, Arequipa. A pre-post intervention experimental study was designed, measuring light levels with luxmeters and simulations with DIALUX software. Sixty-two workers were surveyed about their visual perception using a Likert scale. The data were analyzed with statistical tests to evaluate significant differences. The results indicated a significant increase in average illumination: the production area went from 114 lux to 647 lux and the urinalysis-parasitology area went from 199 lux to 755 lux, exceeding the minimum standard of 500 lux according to NTP EM.010. In addition, 96.77% of workers reported significant improvement in visual comfort (p < 0.001), along with reduced discomfort and perception of eye fatigue. These findings support the importance of lighting control to improve visual ergonomics and well-being in technical environments, agreeing with previous literature linking adequate lighting levels with optimal work performance. As a limitation, the study was confined to a single laboratory and limited period, recommending multicenter extensions and long-term follow-up. In conclusion, lighting control technology represents an effective strategy to enhance visual comfort and efficiency in laboratories.