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Int Ophthalmol. 2014 Aug;34(4):805-8.

Postoperative refractive error following cataract surgery after the first attack of acute primary angle closure.


To investigate differences between preoperative target refraction and postoperative spherical equivalent refraction in eyes with the first attack of acute angle closure glaucoma before and after surgery. We retrospectively examined eyes of 36 patients who suffered the first attack of acute primary angle closure after undergoing cataract extraction and intraocular lens implant. We measured keratometric values (K1, K2) due to medical therapy for high ocular tension and the mean time interval until surgery. We compared the axial length, expected diopter, logMAR visual acuity, K1, K2, refractive spherical equivalent, and intraocular pressure (IOP) before and 6 months after surgery. The average preoperative IOP was 51.3 ± 9.0 mmHg, but it decreased to 14.8 ± 3.6 mmHg after surgery. No corneal edema was observed after surgery. The average axial length was 22.12 ± 1.03 mm and there was no significant change in keratometric values, which were 7.72 ± 0.33 mm (K1) and 7.51 ± 0.31 mm (K2) before surgery and 7.67 ± 0.33 mm (K1) and 7.49 ± 0.29 mm (K2) after surgery. Similarly, no significant difference was observed in average preoperative target refractive error (-0.57 ± 0.53 D) and average postoperative refractive spherical equivalent (-0.67 ± 0.97 D). The inability to accurately determine preoperative refractive error due to corneal edema or other complications is a concern during the first attack of acute angle closure glaucoma. However, our results indicate that no differences should be expected between preoperative refractive error and postoperative refractive spherical equivalent.

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