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oai:docta.ucm.es:20.500.14352/119462023-08-27T22:04:23Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Antona Peñalba, Beatriz author Barrio de Santos, Ana Rosa author Gascó Sánchez, Adriana author Pinar Rincón, Ana author González Pérez, Mariano author Puell Marín, María Cinta author 2018-04 Asthenopia symptoms were investigated in visually-normal subjects without computer-related vision symptoms after prolonged reading from: smartphone versus hardcopy under photopic conditions, and smartphone in conditions of ambient versus dark room illumination. After reading from the smartphone, total symptom scores and nine out of ten questionnaire symptoms were significantly worse than for the hardcopy (“blurred vision while viewing the text, “blurred distance vision after the task”, “difficulty in refocusing from one distance to another”, “irritated or burning eyes”, “dry eyes”, “eyestrain”, “tired eyes”, “sensitivity to bright lights” and “eye discomfort”). Mean total symptom scores and scores for “irritated or burning eyes” and “dry eyes” were significantly higher for the dark versus photopic conditions. In conclusion, prolonged smartphone reading could cause worse asthenopic symptoms than reading from a hardcopy under similar conditions. Symptoms could be even worse when reading from a smartphone in the dark. 0003-6870 10.1016/j.apergo.2017.10.014 https://hdl.handle.net/20.500.14352/11946 https://doi.org/10.1016/j.apergo.2017.10.014 http://www.sciencedirect.com/science/article/pii/S0003687017302351 Symptoms associated with reading from a smartphone in conditions of light and dark