title: Choroidal effusion during glaucoma surgery in patients with prominent episcleral vessels.
abstract: Rapid intraoperative choroidal effusion and flattening of the anterior chamber occurred during glaucoma filtering surgery in four young patients with prominent episcleral vessels, elevated episcleral venous pressure, and advanced open-angle glaucoma. Two of these four patients had Sturge-Weber syndrome. Intraoperative release of suprachoroidal fluid (SCF) through a posterior sclerotomy facilitated reformation of the anterior chamber and repositioning of the iris and ciliary body. Posterior sclerostomy performed prior to opening the anterior chamber minimized the above-mentioned untoward series of events. Analysis of SCF and serum demonstrated considerable differences in total protein and individual immunoglobulin levels; this appears to be a manifestation of molecular sieving at the level of the choriocapillaris. Choroidal detachment and postoperative serous retinal detachment are manifestation of this phenomenon.
mesh_terms: D000328:Adult; D000798:Angiomatosis / Q000150:complications*; D000867:Anterior Chamber; D001826:Body Fluids / Q000032:analysis; D002829:Choroid; D005260:Female; D005901:Glaucoma / Q000150:complications / Q000601:surgery*; D006470:Hemorrhage / Q000150:complications* / Q000517:prevention & control; D006801:Humans; D012590:Sclera / Q000098:blood supply / Q000601:surgery; D013341:Sturge-Weber Syndrome / Q000150:complications*; D013514:Surgical Procedures, Operative / Q000009:adverse effects*; D014690:Venous Pressure