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Punctal occlusion for dry eye syndrome.
Ann-Margret Ervin1, Robert Wojciechowski, Oliver Schein
1Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe Street, W5010, Baltimore, Maryland, USA, 21205.
The Cochrane Database of Systematic Reviews
|September 9, 2010
Summary
Punctal plugs offer symptomatic relief for severe dry eye syndrome, though evidence is limited. Silicone plugs show promise for symptom management, while temporary collagen plugs offer short-term benefits similar to silicone.
Area of Science:
- Ophthalmology
- Ocular Surface Disease
- Medical Device Technology
Background:
- Dry eye syndrome is a common ocular surface disorder characterized by tear film dysfunction and discomfort.
- Punctal occlusion involves blocking tear drainage to conserve natural tears on the eye's surface.
Purpose of the Study:
- To evaluate the safety and efficacy of punctal plugs in managing dry eye syndrome.
- To synthesize evidence from controlled clinical trials on punctal occlusion therapy.
Main Methods:
- Systematic review of randomized and quasi-randomized controlled trials.
- Searched multiple databases including CENTRAL, MEDLINE, EMBASE, LILACS, mRCT, and ClinicalTrials.gov.
- Included trials of collagen or silicone punctal plugs in patients with diagnosed dry eye syndrome.
Main Results:
- Seven trials with 305 participants were included; meta-analysis was not performed due to heterogeneity.
- Punctal plugs demonstrated symptomatic improvement and improved clinical outcomes from baseline.
- Few studies showed a significant benefit over control interventions; adverse effects included epiphora and irritation.
Conclusions:
- Limited controlled trials exist for punctal occlusion in dry eye management.
- Silicone punctal plugs may provide symptomatic relief in severe dry eye.
- Temporary collagen plugs appear effective short-term, comparable to silicone plugs.
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