Public knowledge of low visión and blindness, and readability of on-topic online information
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Purpose: To explore the laymen knowledge of low vision and blindness concepts, and to assess the readability of some on-topic information available online. Methods: A cross-sectional study was performed in March 2019. Knowledge was evaluated by means of an ad hoc questionnaire-survey with two dichotomous questions about concepts related to low vision and blindness, followed with a list of 10 true-or-false statements. Readability of two on-topic online texts of different complexity was evaluated asking participants to rate the difficulty they experienced on a Likert scale and, objectively, by means of the freeware INFLESZ Readability Scale for Spanish language. Data analysis included descriptive statistics, t-tests, and ANOVA test (statistical significance: p<0.05). Results: Fifty-two percent of 103 participants declared never having heard of low vision. Ninety-four percent participants were aware about the word blindness, although most of them misinterpreted it. Neither academic level nor age influenced knowledge (p=0.425 and p=0.382 for low vision; p=0.967 and p=0.060 for blindness). Higher academic level was related to better readability scores of the complex online text (p<0.05). Conclusion: Overall, the general public has a limited awareness of low vision and a large misconception of blindness. Therefore, visual health education actions should aim at fostering knowledge and literacy on the issue. This strategy may encourage individuals to seek the advice of eye care providers in order to prevent and treat visual impairment, with relevant consequences in time, both in terms of quality of life and costs.
CitationLupón, M.; Cardona, G.; Armayones, M. Public knowledge of low visión and blindness, and readability of on-topic online information. "Journal of optometry", 2020,
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