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Cataract surgery lowers IOP in patients with chronic angle-closure glaucoma
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In patients with narrow angles and chronic angle-closure glaucoma, cataract surgery was shown to reduce IOP, according to study findings.
The retrospective case series included 83 eyes of 56 patients with narrow angles or chronic angle-closure glaucoma who underwent cataract surgery. Through a review of patients’ charts, researchers recorded preoperative and postoperative IOP, axial length and anterior chamber depth, and eyes were stratified into four groups based on preoperative IOP.
Overall, 88% of eyes had a reduction in IOP, with a mean reduction of 3.28 mm Hg. Mean follow-up was 3 years.
The researchers found the magnitude of IOP reduction was significantly correlated to preoperative IOP measurement. In eyes with a preoperative IOP greater than 20 mm Hg, mean decrease in IOP was 5.3 mm Hg. Eyes that had a preoperative IOP of greater than 18 mm Hg to 20 mm Hg had a mean reduction of 4.6 mm Hg. Those with a preoperative IOP of greater than 15 mm Hg to 18 mm Hg had a mean decrease of 2.5 mm Hg, and those with a preoperative IOP of 15 mm Hg or less had a mean decrease of 1.4 mm Hg.
Overall magnitude of IOP reduction was weakly correlated to anterior chamber depth, according to the researchers.
Disclosure: The authors have no relevant financial disclosures.
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