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Choroidal Detachment After Baerveldt Glaucoma Implant Surgery: Incidence and Risk Factors
Kentaro Iwasaki1, Ayami Katsuo1, Shogo Arimura1
1Department of Ophthalmology, Faculty of Medical Sciences, University of Fukui, Yoshida, Fukui, Japan.
Clinical Ophthalmology (Auckland, N.Z.)
|June 22, 2026
Summary
Older age and significant postoperative intraocular pressure reduction are key risk factors for choroidal detachment (CD) after Baerveldt glaucoma implant (BGI) surgery. These findings suggest rapid IOP decrease may contribute to CD development.
Area of Science:
- Ophthalmology
- Glaucoma Surgery
- Ocular Complications
Background:
- Choroidal detachment (CD) is a potential complication following glaucoma surgery.
- Understanding risk factors for CD after Baerveldt glaucoma implant (BGI) surgery is crucial for patient management.
Purpose of the Study:
- To determine the incidence of postoperative CD after BGI surgery.
- To identify independent risk factors associated with the development of CD.
Main Methods:
- Retrospective cohort study of adult patients undergoing BGI surgery.
- Data analysis included fundoscopy, B-scan ultrasonography, and multivariable logistic regression.
- Exploratory analyses compared early- and delayed-onset CD.
Main Results:
- Postoperative CD occurred in 18.4% of eyes (48/261).
- Older age (OR 1.06/year) and greater postoperative intraocular pressure (IOP) reduction (OR 1.08/mmHg) were significant independent risk factors for CD.
- Early-onset CD differed from delayed-onset CD in several clinical characteristics.
Conclusions:
- Older age and substantial postoperative IOP reduction are independently associated with CD after BGI surgery.
- Rapid IOP reduction may be a significant factor in the pathogenesis of CD.
- Early- and delayed-onset CD might involve distinct postoperative aqueous humor dynamic mechanisms.
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