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BioMed Research International
Volume 2015 (2015), Article ID 636548, 8 pages
Research Article

Analysis of Retinal Peripapillary Segmentation in Early Alzheimer’s Disease Patients

1Instituto de Investigaciones Oftalmológicas Ramón Castroviejo, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain
2Departamento de Oftalmología y ORL, Facultad de Medicina, UCM, 28040 Madrid, Spain
3Departamento de Oftalmología y ORL, Facultad de Óptica y Optometría UCM, 28040 Madrid, Spain
4Servicio de Geriatría, Hospital Universitario Clínico San Carlos, 28040 Madrid, Spain

Received 23 March 2015; Accepted 8 June 2015

Academic Editor: Jose F. Arevalo

Copyright © 2015 Elena Salobrar-Garcia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Decreased thickness of the retinal nerve fiber layer (RNFL) may reflect retinal neuronal-ganglion cell death. A decrease in the RNFL has been demonstrated in Alzheimer’s disease (AD) in addition to aging by optical coherence tomography (OCT). Twenty-three mild-AD patients and 28 age-matched control subjects with mean Mini-Mental State Examination 23.3 and 28.2, respectively, with no ocular disease or systemic disorders affecting vision, were considered for study. OCT peripapillary and macular segmentation thickness were examined in the right eye of each patient. Compared to controls, eyes of patients with mild-AD patients showed no statistical difference in peripapillary RNFL thickness (); however, sectors 2, 3, 4, 8, 9, and 11 of the papilla showed thinning, while in sectors 1, 5, 6, 7, and 10 there was thickening. Total macular volume and RNFL thickness of the fovea in all four inner quadrants and in the outer temporal quadrants proved to be significantly decreased (). Despite the fact that peripapillary RNFL thickness did not statistically differ in comparison to control eyes, the increase in peripapillary thickness in our mild-AD patients could correspond to an early neurodegeneration stage and may entail the existence of an inflammatory process that could lead to progressive peripapillary fiber damage.