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Original Article
- Effect of lubricant eye drops administered before visual field testing in patients with glaucoma and dry eye
- Jiyoung Emily Lee, Eun Chul Kim
- Insights Cataract Refract Surg 2026;11(3):91-97. Published online October 29, 2026
- DOI: https://doi.org/10.63375/icrs.26.009
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Abstract
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ePub - Purpose
This study aimed to evaluate the effect of administering lubricant eye drops before visual field testing in patients with glaucoma and dry eye syndrome.
Methods
The records of 30 patients (60 eyes) with dry eye syndrome were retrospectively reviewed. Before visual field testing, 0.1% hyaluronic acid eye drops were administered to the right eye, while the left eye received no drops. The efficacy of the lubricant eye drops was assessed by retrospectively comparing tear meniscus height, noninvasive tear film break-up time (NiBUT), and corneal staining scores before and after testing.
Results
Before visual field testing, NiBUT was 5.16±2.19 seconds in the right eye and 5.07±1.98 seconds in the left eye; after testing, it was 5.04±2.36 seconds and 4.27±1.32 seconds, respectively. Tear meniscus height was 0.26±0.11 mm in the right eye and 0.25±0.10 mm in the left eye before testing, decreasing to 0.25±0.11 mm and 0.22±0.10 mm, respectively, afterward. Before testing, corneal staining scores were 1.07±0.74 in the right eye and 1.17±0.86 in the left eye; after testing, they were 1.33±0.76 and 1.90±0.95, respectively. The decreases in NiBUT and tear meniscus height from before to after testing were greater in the left eye than in the right eye, and corneal staining increased significantly (P<0.05). Fixation loss, false-positive, and false-negative rates during visual field testing were all significantly higher in the left eye than in the right eye (P<0.05).
Conclusion
Visual field testing requires patients to keep their eyes open and maintain focus for an extended period, which can exacerbate symptoms in patients with dry eye syndrome and potentially compromise test accuracy. Administering lubricant eye drops before testing, following consultation with an ophthalmologist, is thought to alleviate dry eye symptoms and improve test accuracy.
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