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Effect of Visual Field Test on Intraocular Pressure in Glaucoma Patients
Weon Jin Jang1, Han Jun Chung2, Min Woo Lee2
1Department of Public Health, Graduate School of Konyang University, Daejeon 35365, Republic of Korea.
Journal of Clinical Medicine
|September 27, 2025
Summary
Intraocular pressure (IOP) significantly decreases after a visual field test in glaucoma patients, returning to baseline levels within 60 minutes. No adjustment is needed for IOP measurements taken an hour post-test.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Intraocular Pressure Monitoring
Background:
- Glaucoma management requires accurate intraocular pressure (IOP) monitoring.
- Visual field testing is a standard diagnostic procedure for glaucoma.
- Potential IOP fluctuations post-testing require investigation.
Purpose of the Study:
- To evaluate changes in intraocular pressure (IOP) before and after visual field testing in glaucoma patients.
- To compare IOP changes between glaucoma patients and healthy controls.
- To determine the optimal timing for post-test IOP measurement.
Main Methods:
- 132 glaucoma patients and 103 controls underwent visual field testing (Humphrey Visual Field analyzer, SITA standard program).
- IOP was measured five times: pre-test, and immediately, 10, 30, and 60 minutes post-test.
- Data analyzed across age groups (40s, 50s, 60s).
Main Results:
- Glaucoma patients showed an IOP decrease from 15.09 mmHg pre-test to 14.29 mmHg immediately post-test, and 13.59 mmHg at 10 minutes.
- IOP returned to baseline (15.01 mmHg) at 60 minutes post-test in glaucoma patients.
- A smaller IOP reduction was observed in controls, with similar patterns across age groups.
Conclusions:
- Intraocular pressure temporarily decreases after visual field testing, with the lowest levels observed within 10 minutes.
- IOP returns to pre-test levels by 60 minutes post-test.
- IOP measurements taken 60 minutes after visual field testing do not require adjustment for temporary fluctuations.
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