Effect of Smartphone Use on Intraocular Pressure

Eun Ji Lee, Hyunjoong Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The rapidly increasing utilization of smartphones makes ophthalmic problems associated with their use an important issue. This prospective study aimed to determine whether using a smartphone to view visual material is associated with a change in the intraocular pressure (IOP), and to determine which groups of factors best predict the time-dependent increase in IOP with smartphone use. This study included 158 eyes (127 glaucomatous and 31 healthy eyes) recruited from Seoul National University Bundang Hospital. Participants performed a sustained fixation task consisting of watching a movie on a smartphone screen for 30 minutes continuously at a viewing distance of 30 cm. A small but statistically significant time-dependent increase in IOP was observed while viewing a movie on a smartphone, being 10.6 ± 3.1, 11.0 ± 3.3, 11.2 ± 3.4, and 11.6 ± 3.5 mmHg before and 5, 10, and 30 minutes after the fixation task, respectively (P < 0.0001). Recursive partitioning tree analysis revealed that a shallower anterior chamber (<2.32 mm) was the strongest predictive factor for faster time-dependent increase in IOP (0.68 mmHg/minute). A higher visual field mean deviation (≥–0.22 dB), and an older age (≥48 years) were the second and third most influential factors associated with the rate of IOP increase (0.59 and 0.15 mmHg/minute, respectively).

Original languageEnglish
Article number18802
JournalScientific reports
Issue number1
Publication statusPublished - 2019 Dec 1

Bibliographical note

Funding Information:
supported by the finding of a smaller ACD and older age being associated with a time-dependent increase in IOP in our study.

Funding Information:
This work was supported by the Seoul National University Bundang Hospital Research Fund (no. 02-2016-023) and by the Basic Science Research program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology, Seoul, South Korea (no. 2016R1D1A1B02011696). The funder had no role in the design or conduct of this research. Neither author has a competing interest in any of the materials discussed in this article.

Publisher Copyright:
© 2019, The Author(s).

All Science Journal Classification (ASJC) codes

  • General


Dive into the research topics of 'Effect of Smartphone Use on Intraocular Pressure'. Together they form a unique fingerprint.

Cite this