Abstract
Modern cataract surgery with use of viscoelastics can induce remarkable early spikes of the intraocular pressure (IOP) in patients with glaucoma. The purpose of this prospective study was to investigate risk factors for an early increase of the IOP following cataract surgery in eyes with end-stage glaucoma. Clear cornea phacoemulsification with implantation of a foldable acrylic lens was performed in 25 eyes with end-stage glaucoma (primary open-angle glaucoma including normal tension glaucoma or exfoliative glaucoma) either under topical anesthesia or under general anesthesia. In eyes with exfoliative glaucoma, trabecular aspiration was performed additionally. IOP measurements were conducted at the day before surgery, 4 hours following surgery and on the first morning following surgery. Cataract surgery was performed without complications. The mean IOP was 18.5 +/- 4.2 mm Hg with 2.1 +/- 1.0 topical medications. 4 hours postoperatively, mean IOP was 31.3 +/- 11.9 mm Hg. In eyes with exfoliative glaucoma (n = 12) the early postoperative IOP was 28.5 +/- 12.0 mm Hg, but without significant difference compared to eyes with POAG (n = 13). The early postoperative IOP showed significant correlation with the maximum IOP in patient's history (p = 0.014). Patients with late-stage glaucoma can experience considerable early IOP spikes following uneventful cataract surgery, although preoperatively IOP is controlled by topical medications. Postoperative IOP monitoring is recommended at the day of surgery, especially if high IOP values are reported in patient's history.
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