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The prevalence of fundus diseases in the Portuguese population over 55 years of age

Poster Details

First Author: A.Leal PORTUGAL

Co Author(s):    M.L. Cachulo   I. Laíns   S. Nunes   C. Lobo   J. Figueira   R. Silva   0   0 0   0 0   0 0   0 0

Abstract Details


To describe the prevalence of fundus diseases in an aged cohort of a Portuguese population-based sample.


Department of Ophthalmology - Hospital and University Coimbra Centre, Portugal Association for Innovation and Biomedical Research on Light and Image, Coimbra, Portugal Ophthalmology Department of the Faculty of Medicine – University of Coimbra, Portugal


All patients with ≥55 years old, from a Portuguese primary health-care unit, were invited to participate. Responders underwent complete ophthalmic examination and fundus imaging. All images were evaluated and classified by a certified grader (ophthalmologist). Where necessary the patients underwent additional diagnostic tests. The final register of the fundus pathology was then performed.


Three thousand participants were included (from 4370 eligible – 68.8% response rate) and 2975 were included in the analysis with a mean age of 69,9 ± 8,7 years. The overall prevalence of early and late age-related macular degeneration (AMD) was 17,71% and 0,67% respectively. The prevalence of diabetic retinopathy (DR) of any type was 2,96%. The overall prevalence of epiretinal membrane, retinal vein occlusion (RVO), myopic degeneration and retinitis pigmentosa (RP) was respectively 1,45%, 0,17%, 0,24% and 0,17%.


To our knowledge, this is a pioneer study in a Portuguese population. The prevalence of early form of AMD in this population-based Portuguese Study was similar to that observed in other large-scale population-based studies. However, the prevalence of late AMD, DR, epiretinal membrane, RVO and myopic degeneration was lower and the prevalence of RP was superior to that found in similar studies.

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