Intraocular Pressure and Environmental Factors from a German Hospital, 2016-2021

From 2016 to 2021, this dataset contains 199,804 intraocular pressure (IOP) measurements from outpatients at the Eye Center, University Hospital Freiburg, Germany. It was created by Cornelius Wiedenmann to investigate correlations between IOP and environmental factors like daily mean temperature, sunshine duration, and atmospheric pressure. Analysis revealed an annual periodic IOP variation with an amplitude of approximately 0.4 mm Hg.

Use Cases

• Modeling seasonal patterns in intraocular pressure based on the described annual periodicity.
• Analyzing correlations between IOP and daily mean temperature, as indicated by a significant negative relationship.
• Investigating the lagged effect of sunshine exposure on biological factors, referenced as a significant influence from the preceding 10 days.

Strengths

• Contains 199,804 IOP measurements, providing a substantial sample size.
• Covers a 5-year time range from 2016 to 2021, enabling longitudinal analysis.
• Explicitly states key findings, such as IOP being highest in January (15.0 ± 3.8 mm Hg) and lowest in July (14.6 ± 3.6 mm Hg).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count for the final analytical dataset is unknown, as the 199,804 figure refers to initial measurements before exclusions.
• Data is from a single center in Germany, which may limit geographical generalizability.

Provenance

Source

Eye Center, University Hospital Freiburg, Germany.

Collection Method

Retrospective analysis of IOP measurements from outpatients using non-contact tonometry.

Time Range

2016 to 2021

Freshness

Last updated 2026-04-28 16:25:08; freshness should be verified.

Geography

Freiburg, Germany.