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[Seasonal variation in intraocular pressure]
T Henmi1, S Yamabayashi, M Furuta
1Department of Ophthalmology, Yamanashi Medical College, Japan.
Nippon Ganka Gakkai Zasshi
|August 1, 1994
Summary
Physicians observed higher intraocular pressure (IOP) in winter. This study confirms significantly higher winter IOP in normal subjects and glaucoma patients, indicating seasonal variations impact eye pressure management.
Area of Science:
- Ophthalmology
- Physiology
Context:
- Physicians often observe seasonal differences in intraocular pressure (IOP).
- Quantifying these seasonal IOP variations is challenging due to treatment adjustments in glaucoma patients.
- This study investigates seasonal IOP changes in subjects without therapy modifications.
Purpose:
- To statistically evaluate the difference between summer and winter intraocular pressure (IOP).
- To compare seasonal IOP fluctuations across normal subjects, ocular hypertensive individuals, and primary open-angle and low-tension glaucoma patients.
Summary:
- The study analyzed winter and summer IOP in four groups: normal, ocular hypertensive, primary open-angle glaucoma, and low-tension glaucoma.
- A statistically significant increase in mean IOP was observed during winter across all groups.
- Greater IOP fluctuations were noted in ocular hypertensive and primary open-angle glaucoma groups compared to normal and low-tension glaucoma groups.
Impact:
- Seasonal variations in intraocular pressure (IOP) are statistically significant.
- These findings suggest that seasonal IOP changes should be considered in the clinical management of glaucoma patients.
- Understanding seasonal IOP patterns can lead to more personalized and effective glaucoma treatment strategies.