title: Screening for Diabetic Retinopathy in the Central Region of Portugal. Added Value of Automated 'Disease/No Disease' Grading.
abstract: Purpose: To describe the procedures of a nonmydriatic diabetic retinopathy (DR) screening program in the Central Region of Portugal and the added value of the introduction of an automated disease/no disease analysis. Methods: The images from the DR screening program are analyzed in a central reading center using first an automated disease/no disease analysis followed by human grading of the disease cases. The grading scale used is as follows: R0 - no retinopathy, RL - nonproliferative DR, M - maculopathy, RP - proliferative DR and NC - not classifiable. Results: Since the introduction of automated analysis in July 2011, a total of 89,626 eyes (45,148 patients) were screened with the following distribution: R0 - 71.5%, RL - 22.7%, M - 2.2%, RP - 0.1% and NC - 3.5%. The implemented automated system showed the potential for human grading burden reduction of 48.42%. Conclusions: Screening for DR using automated analysis allied to a simplified grading scale identifies DR vision-threatening complications well while decreasing human burden. © 2014 S. Karger AG, Basel.
authors.affiliation: AIBILI, CORC - Association for Innovation and Biomedial Research on Light and Image, Coimbra Ophthalmology Reading Center, Coimbra, Portugal.
authors.forename: Luisa
authors.initials: L
authors.lastname: Ribeiro
authors.forename: Carlos Manta
authors.initials: CM
authors.lastname: Oliveira
authors.forename: Catarina
authors.initials: C
authors.lastname: Neves
authors.forename: João Diogo
authors.initials: JD
authors.lastname: Ramos
authors.forename: Hélder
authors.initials: H
authors.lastname: Ferreira
authors.forename: José
authors.initials: J
authors.lastname: Cunha-Vaz