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Editors Selection IGR 16-4
Surgical Therapy: AS-OCT after cataract surgery
Comment by David Friedman on:
26181 Can preoperative anterior chamber angle width predict magnitude of intraocular pressure change after cataract surgery?, Zhou AW; Giroux J; Mao AJ et al., Canadian Journal of Ophthalmology, 2010; 45: 149-153
Zhou et al. (997) enrolled 53 patients and assessed anterior segment optical coherence tomography (AS-OCT) angle width in a Canadian patient population before and after surgery to determine if change in angle width was predictive of change in intraocular pressure (IOP) after cataract surgery. The study found no association. Study subjects mostly had open angles and low baseline IOP (the mean was around 15 mmHg). The authors confirmed findings from others showing that angles widen after cataract surgery both in open and narrow angles. In addition, the IOP dropped in study patients by about 2 mmHg after cataract surgery (averaging the three- and six-months IOP values) and this change was not associated with baseline angle width. As the authors note, the study was somewhat underpowered to detect a difference given the relatively small change in IOP and the limited range of angle width at baseline.
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