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. 2019 Sep;47(7):909-917.
doi: 10.1111/ceo.13559. Epub 2019 Jun 13.

Influence of presbyopia on smartphone usage among Chinese adults: A population study

Congyao Wang  1 , Xiuqin Wang  1   2 , Ling Jin  1 , Bobby Tang  3 , Wenhui Zhu  1   4 , Guoshan Zhang  1 , Tingting Chen  1   4 , Helen McAneney  3 , Jordan Kassalow  5 , Nathan Congdon  1   3   6
Affiliations

Influence of presbyopia on smartphone usage among Chinese adults: A population study

Congyao Wang et al. Clin Exp Ophthalmol. 2019 Sep.

Abstract

Importance: Presbyopia, an essentially universal, age-related loss of the ability to focus un-aided on near objects, is the world's leading cause of visual impairment.

Background: Smartphone use is widespread in China, but little is known about the prevalence, determinants and correction of difficulties with smartphone use in the setting of presbyopia.

Design: Cross-sectional data from a population-based longitudinal cohort study.

Participants: A total of 1817 persons aged ≥35 years in Guangzhou, Southern China.

Methods: Participants underwent near visual acuity (NVA) testing and completed questionnaires on smartphone usage detailing knowledge of their own presbyopia status, frequency (hours/day) and subjective difficulties with use of mobile and smartphones. Presbyopia was defined as uncorrected bilateral NVA ≤6/12 with best-corrected bilateral NVA >6/12.

Main outcome measures: Difficulty in smartphone use associated with uncorrected presbyopia.

Results: Among 1427 respondents (78.5%) undergoing examination, 1191 (83.5%) completed questionnaires (mean age 52.3 ± 11.6 years; 54.9% women). Among 451 persons (37.8%) with presbyopia owning smartphones, 290 (64.3%) reported difficulty using them. Multiple ordinal logistic regression modelling showed difficulty in smartphone use due to presbyopia was associated with higher educational level (P = .013), worse NVA (P < .001) and more time spent using smartphones (P = .002 for 1-3 hours/day). Among persons with presbyopia owning smartphones, 353 (78.0%) said they would pay >US$15 (median US$45) for innovations making smartphone use easier.

Conclusions and relevance: Difficulty in using smartphones in the presence of presbyopia is common and affected persons are willing to pay for useful solutions to the problem.

Keywords: near vision impairment; population study; presbyopia; smartphone.

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References

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