RT Journal Article T1 Optic nerve and macular optical coherence tomography in recovered COVID-19 patients A1 Burgos Blasco, Bárbara A1 Güemes Villahoz, Noemi A1 Vidal Villegas, Beatriz A1 Martínez De La Casa Fernández-Borrella, José María A1 Donate López, Juan A1 Martín Sánchez, Francisco Javier A1 González Armengol, Juan Jorge A1 Porta Etessam, Mariano Jesús A1 Rodríguez Martin, José Luis A1 García Feijoo, Julián AB Purpose: To investigate the peripapillary retinal nerve fiber layer thickness (RNFLT), macular RNFLT, ganglion cell layer (GCL), and inner plexiform layer (IPL) thickness in recovered COVID-19 patients compared to controls.Methods: Patients previously diagnosed with COVID-19 were included, while healthy patients formed the historic control group. All patients underwent an ophthalmological examination, including macular and optic nerve optical coherence tomography. In the case group, socio-demographic data, medical history, and neurological symptoms were collected.Results: One hundred sixty patients were included; 90 recovered COVID-19 patients and 70 controls. COVID-19 patients presented increases in global RNFLT (mean difference 4.3; CI95% 0.8 to 7.7), nasal superior (mean difference 6.9; CI95% 0.4 to 13.4), and nasal inferior (mean difference 10.2; CI95% 2.4 to 18.1) sectors of peripapillary RNFLT. Macular RNFL showed decreases in COVID-19 patients in volume (mean difference −0.05; CI95% −0.08 to −0.02), superior inner (mean difference −1.4; CI95% −2.5 to −0.4), nasal inner (mean difference −1.1; CI95% −1.8 to −0.3), and nasal outer (mean difference −4.7; CI95% −7.0 to −2.4) quadrants. COVID-19 patients presented increased GCL thickness in volume (mean difference 0.04; CI95% 0.01 to 0.07), superior outer (mean difference 2.1; CI95% 0.8 to 3.3), nasal outer (mean difference 2.5; CI95% 1.1 to 4.0), and inferior outer (mean difference1.2; CI95% 0.1 to 2.4) quadrants. COVID-19 patients with anosmia and ageusia presented an increase in peripapillary RNFLT and macular GCL compared to patients without these symptoms.Conclusions: SARS-CoV-2 may affect the optic nerve and cause changes in the retinal layers once the infection has resolved. PB SAGE Publications SN 1120-6721 YR 2021 FD 2021-03-15 LK https://hdl.handle.net/20.500.14352/8021 UL https://hdl.handle.net/20.500.14352/8021 LA eng NO Burgos Blasco, B., Güemes Villahoz, N, Vidal Vilegas, B. et al. «Optic Nerve and Macular Optical Coherence Tomography in Recovered COVID-19 Patients». European Journal of Ophthalmology, vol. 32, n.o 1, enero de 2022, pp. 628-36. DOI.org (Crossref), https://doi.org/10.1177/11206721211001019. DS Docta Complutense RD 4 abr 2025