Central retinal vein occlusion and pseudoexfoliation syndrome
Received 17 November 2014
Accepted for publication 23 December 2014
Published 20 May 2015 Volume 2015:10 Pages 879—883
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 3
Editor who approved publication: Dr Richard Walker
Dimitrios Karagiannis,1 Georgios A Kontadakis,1,2 Nektarios E Klados,2 Ioannis Tsoumpris,1 Artemios S Kandarakis,1 Efstratios A Parikakis,1 Ilias Georgalas,3 Miltiadis K Tsilimbaris2
1Ophthalmiatreio Eye Hospital of Athens, Athens, Greece; 2Department of Ophthalmology, University Hospital of Heraklion, University of Crete, Heraklion, Greece; 3Department of Ophthalmology, General Hospital of Athens, Athens, Greece
Purpose: The purpose of this study was to investigate the existence of pseudoexfoliation syndrome (PXF) as a risk factor for the development of central retinal vein occlusion (CRVO).
Methods: This was a retrospective, comparative study of the prevalence of pseudoexfoliation in three groups of patients: 48 patients with CRVO, 164 patients with branch retinal vein occlusion (BRVO), and 70 control patients (70 eyes). All patients were phakic and had no previous diagnosis of glaucoma. Patients were matched in terms of age and systemic hypertension. All patients had normal intraocular pressure (IOP) at presentation (defined as less than or equal to 21 mmHg).
Results: In the CRVO group, 14 out of 48 patients were diagnosed as having PXF (29.17%). In the BRVO group, 14 out of 164 patients had PXF (8.5%), and in the control group, six out of 70 patients had PXF (8.6%). Differences of percentage between groups were statistically significant (P<0.001, χ2 test). When comparing patient subgroup with ischemic CRVO with subgroup with non-ischemic CRVO, we found that in the ischemic CRVO group, 13 out of 27 patients were diagnosed as having PXF (48.15%), and in the non-ischemic CRVO group, one out of 21 patients was diagnosed as having PXF (4.7%; P<0.001, χ2 test). The relative odds of having CRVO in patients with PXF versus patients without PXF were 4.406 (confidence interval [CI], 2.03–9.54).
Conclusion: PXF and CRVO, especially ischemic, are strongly associated in our study. Our results indicate that PXF might be an independent factor for CRVO, as it is related with CRVO independently from glaucoma.
Keywords: pseudoexfoliation, ischemic and non-ischemic central retinal vein occlusion, branch retinal vein occlusion, glaucoma
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