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Association between corneal hysteresis and the magnitude of intraocular pressure decrease after cataract surgery.

Abstract：

PURPOSE:To evaluate the relationship between baseline corneal hysteresis (CH) and the change in intraocular pressure (IOP) before and after cataract extraction in patients without glaucoma. SETTING:Private practice, New York City, New York, USA. DESIGN:Retrospective cohort study. METHODS:Charts of consecutive patients who had phacoemulsification cataract extraction with posterior chamber intraocular lens implantation were analyzed. All included patients had preoperative and postoperative measurements with the Ocular Response Analyzer 2 to 4 months and 10 to 12 months postoperatively. Data collected included age, baseline CH, baseline central corneal thickness (CCT), and IOP. RESULTS:Thirty nine (65 eyes) of the 230 patients met the inclusion criteria. The mean patient age was 70.8 years ± 8.6 (SD). The mean preoperative, 2- to 4-month and 10- to 12- month postoperative IOP values were 14.8 ± 3.5 mm Hg, 11.9 ± 3.4 mm Hg, and 12.6 ± 3.1 mm Hg, respectively (P < .05 for comparisons with preoperative IOP). The baseline CH was not predictive of the IOP reduction at 2 to 4 months (β = -0.3; 95% confidence interval [CI], -0.7 to 0.01; P = .06). However, the baseline CH (but not the baseline CCT) was statistically associated with the magnitude of IOP reduction at 10 to 12 months when controlling for patient age (β = -0.5; 95% CI, -0.8 to -0.1; P = .01). CONCLUSION:A low baseline CH was associated with a larger magnitude of IOP reduction after cataract extraction. FINANCIAL DISCLOSURE:Dr. Radcliffe is a consultant to Reichert Technologies and Glaukos Corp.; a consultant to and speaker for Allergan, Inc., Alcon Laboratories, Inc., Iridex Corp., Merge Healthcare, Carl Zeiss Meditec AG; and a speaker for Merck Pharmaceuticals. No other author has a financial or proprietary interest in any material or method mentioned.

journal_name

J Cataract Refract Surg

journal_title

Journal of cataract and refractive surgery

authors

Deol M,Ehrlich JR,Shimmyo M,Radcliffe NM

doi

10.1016/j.jcrs.2014.09.040

subject

Has Abstract

pub_date

2015-06-01 00:00:00

pages

1176-81

issue

eissn

0886-3350

issn

1873-4502

pii

S0886-3350(15)00476-9

journal_volume

pub_type

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Association between corneal hysteresis and the magnitude of intraocular pressure decrease after cataract surgery.