1. Neuroretinal Rim Area Change in Glaucoma Patients With Visual Field Progression Endpoints and Intraocular Pressure Reduction. The Canadian Glaucoma Study: 4
- Author
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Rizwan Malik, Neil O'Leary, Frederick S. Mikelberg, A. Gordon Balazsi, Raymond P. LeBlanc, Mark R. Lesk, Marcelo T. Nicolela, Graham E. Trope, Balwantray C. Chauhan, Paul H. Artes, Paul E. Rafuse, David M. Andrews, Mohammad Humayun, James MacNeill, Andrew C. Orr, John H. Quigley, George A. Sapp, Christine A. MacDonald, Helen M. Sauveur, Sara L. Lavender, Oscar P. Kasner, Nabil E. Saheb, Alan J. Coffey, W. Edward Connolly, Marino J. Discepola, Conrad C. Kavalec, Susan K. Lindley, Marc Mullie, Pearl Alexander, Bonnie May, Gordon R. Douglas, Stephen M. Drance, Jeffrey A. Blicker, Robin S. Cottle, Vincent Wong, Zarina Pardhan, Yvonne M. Buys, John G. Flanagan, Catherine M. Birt, Michael W. Easterbrook, William G. Macrae, Samuel N. Markowitz, Maureen Wolpert, Emad Eskander, Christine A. Macgillivray, Erin Hicks, Kathryn Patterson, Andrew Vassallo, and Pantelis Andreou
- Subjects
0301 basic medicine ,Male ,Retinal Ganglion Cells ,Intraocular pressure ,medicine.medical_specialty ,Canada ,genetic structures ,Endpoint Determination ,Area change ,Optic Disk ,Vision Disorders ,Glaucoma ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Nerve Fibers ,Interquartile range ,Ophthalmology ,Optic Nerve Diseases ,medicine ,Humans ,Prospective Studies ,Tomography ,Intraocular Pressure ,Aged ,Univariate analysis ,Microscopy, Confocal ,business.industry ,Middle Aged ,medicine.disease ,eye diseases ,Visual field ,030104 developmental biology ,Neuroretinal rim ,030221 ophthalmology & optometry ,Disease Progression ,Visual Field Tests ,Female ,sense organs ,Visual Fields ,business ,Glaucoma, Open-Angle ,Cohort study - Abstract
Purpose To compare rim area rates in patients with and without the visual field (VF) progression endpoint in the Canadian Glaucoma Study and determine whether intraocular pressure (IOP) reduction following the endpoint altered rim area rate. Design Prospective multicenter cohort study. Methods setting: University hospitals. patient population: Two hundred and six patients with open-angle glaucoma were examined at 4-month intervals with standard automated perimetry and confocal scanning laser tomography. intervention: After the endpoint, IOP was reduced by ≥20%. outcome measures: Univariate analysis for change in rim area rate and multivariable analysis to adjust for independent covariates (eg, age, sex, and IOP). Results Patients with an endpoint (n = 59) had a worse rim area rate prior to the endpoint compared to those without (n = 147; median [interquartile range]: −14 [−32, 11] × 10 −3 mm 2 /y and −5 [−14, 5] × 10 −3 mm 2 /y, respectively, P = .02). In univariate analysis, there was no difference in rim area rate before and after the endpoint (median difference [95% CI], 8 (−10, 24) × 10 −3 mm 2 /y), but the muItivariate analysis showed that IOP reduction >2 mm Hg after the endpoint was strongly linked to a reduction in rim area rate decline (8 × 10 −3 mm 2 /y for each additional 1 mm Hg reduction). Conclusions Patients with a VF endpoint had a median rim area rate that was nearly 3 times worse than those without an endpoint. Lower mean follow-up IOP was independently associated with a slower decline in rim area.
- Published
- 2015