López Cuenca, InésGarcía Martín, Elena SalobrarBarabash Bustelo, AnaNebreda Pérez, AlbertoRamírez Toraño, FedericoSánchez Puebla, LidiaGarcía Colomo, AlejandraFernández Albarral, JoséRamírez Sebastián, Ana IsabelRamírez Sebastián, José ManuelMaestu Unturbe, FernandoSalazar Corral, Juan JoséGil Gregorio, PedroÁlvarez Gutierrez, MaríaElvira Hurtado, LorenaMatamoros, José A.Hoz Montañana, María Rosa De2023-08-082023-08-082023-07-182227-905910.3390/biomedicines11072024https://hdl.handle.net/20.500.14352/87403This article belongs to the Special Issue Neurodegenerative Diseases: Recent Advances and Future Perspectives. Received: 19 June 2023 ; Revised: 6 July 2023 ; Accepted: 12 July 2023 ; Published: 18 July 2023This study aimed to analyze the evolution of visual changes in cognitively healthy individuals at risk for Alzheimer’s disease (AD). Participants with a first-degree family history of AD (FH+) and carrying the Ε4+ allele for the ApoE gene (ApoE ε4+) underwent retinal thickness analysis using optical coherence tomography (OCT) and visual function assessments, including visual acuity (VA), contrast sensitivity (CS), color perception, perception digital tests, and visual field analysis. Structural analysis divided participants into FH+ ApoE ε4+ and FH− ApoE ε4− groups, while functional analysis further categorized them by age (40–60 years and over 60 years). Over the 27-month follow-up, the FH+ ApoE ε4+ group exhibited thickness changes in all inner retinal layers. Comparing this group to the FH− ApoE ε4− group at 27 months revealed progressing changes in the inner nuclear layer. In the FH+ ApoE ε4+ 40–60 years group, no progression of visual function changes was observed, but an increase in VA and CS was maintained at 3 and 12 cycles per degree, respectively, compared to the group without AD risk at 27 months. In conclusion, cognitively healthy individuals at risk for AD demonstrated progressive retinal structural changes over the 27-month follow-up, while functional changes remained stable.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal articlehttps://doi.org/10.3390/biomedicines11072024https://www.mdpi.com/2227-9059/11/7/2024open access616.894-053.9617.75-73.7617.7-001.15Alzheimer’s disease; genetic risk; familiar history; ApoE ε4; optical coherence tomography; visual acuity; contrast sensitivityNeurociencias (Medicina)Óptica y optometríaDiagnóstico por imagen y medicina nuclear2490 Neurociencias3201.09 Oftalmología2411.15 Fisiología de la Visión