ArticleScientific reports2025
Association between intraocular pressure and climate parameters.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
This study investigated the association between climate parameters and intraocular pressure (IOP). We used two large, multicenter cross-sectional datasets: the Japan Ningen Dock Study (JNDS), with 1,477,066 participants (52.3 ± 10.8 years), and the Jikei dataset, with 10,361 participants (50.3 ± 11.0 years). In both, IOP was measured via noncontact tonometry. We obtained daily average air temperature, station-level air pressure, and relative humidity from the Japan Meteorological Agency. We used multiple linear regression, adjusting for known IOP-related factors, to evaluate the relationship between climate parameters and IOP; the same analysis was also performed by prefecture as a sensitivity analysis. The mean right-eye IOP was 13.4 ± 3.0 mmHg (JNDS) and 12.7 ± 2.8 mmHg (Jikei). Air temperature showed a significant negative correlation with IOP (JNDS: β = - 0.032, 95% CI: - 0.033 to - 0.032, P < 0.001; Jikei: β = - 0.023, 95% CI: - 0.031 to - 0.016, P < 0.001), whereas neither air pressure nor humidity was associated with IOP. Sensitivity analysis indicated a stronger, though not significant, relationship between IOP and temperature in colder regions (correlation coefficient R = - 0.21, P = 0.174). These findings underscore the importance of considering climate, particularly temperature, in IOP fluctuations.
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