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J Pediatr Ophthalmol Strabismus ; 58(4): 224-231, 2021.
Article in English | MEDLINE | ID: covidwho-1319770

ABSTRACT

PURPOSE: To subjectively evaluate the degree of visual fatigue in children attending online classes during the coronavirus 2019 (COVID-19) pandemic and objectively evaluate accommodation and vergence dysfunction in these children. METHODS: Children aged between 10 and 17 years with recent onset of asthenopia symptoms were included. Symptoms were evaluated using the Convergence Insufficiency Symptom Survey (CISS) questionnaire. A CISS score of 16 or greater was considered symptomatic. Binocular vergence and accommodation parameters were objectively evaluated. For ease of comparison, children were divided into two groups: children using digital devices for less than 4 hours/day and children using digital devices for 4 hours/day or more. RESULTS: A total of 46 children with a mean age of 14.47 ± 1.95 years were evaluated. The mean duration of online classes during the COVID-19 pandemic was 3.08 ± 1.68 hours/day, which is higher than before the COVID-19 pandemic (0.58 ± 0.71 hours/day, P < .00001). The mean CISS scores were 21.73 ± 12.81 for children using digital devices less than 4 hours/day and 30.34 ± 13.0 for children using digital devices for 4 hours/day or more (P = .019). Mean near exophoria (P = .03), negative fusional vergence (P = .02), negative relative accommodation (P = .057), and accommodation amplitude (P = .002) were different between the two groups. The Spearman correlation between the symptomatic CISS score and the duration of online classes showed a linear association (coefficient rs = 0.39; P = .007). In the multivariate analysis, only the duration of online classes longer than 4 hours was a significant risk factor (P = .07) for the symptomatic CISS score. CONCLUSIONS: Online classes longer than 4 hours were more detrimental to abnormal binocular vergence and accommodation parameters than online classes shorter than 4 hours. [J Pediatr Ophthalmol Strabismus. 2021;58(4):224-231.].


Subject(s)
Accommodation, Ocular/physiology , COVID-19/epidemiology , Convergence, Ocular/physiology , Ocular Motility Disorders/physiopathology , Pandemics , Vision, Binocular/physiology , Adolescent , Child , Comorbidity , Female , Humans , Male , SARS-CoV-2 , Surveys and Questionnaires
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