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Purpose The purpose of this study is to investigate anatomic and morphologic features of inner and outer retinal layers in patients recovered from COVID-19 with Spectral Domain Optical Coherence Tomography (SD-OCT), whether correlate with any symptoms during disease process. Methods 32 patients recovered from COVID-19 and age- and gender-matched 36 healthy controls were included in this cross-sectional study. Ganglion cell-inner plexiform layer, macular and peripapiller retinal nerve fiber layer (RNFL), inner nuclear layer (INL), outer nuclear layer (ONL), outer plexiform layer (OPL) and the outer retinal hyperreflective bands including external limiting membrane (ELM), ellipsoid zone (EZ) and interdigitation zone (IZ) were examined with SD-OCT. The differences of each retinal layers thickness among subgroup analysis of ocular pain and headache were also compared. Results Macular RNFL of inner and outer nasal and outer inferior quadrants were thinner in COVID-19 patients compared to healthy control group ( p = 0.046, p = 0.014 and p = 0.016, respectively). Thinning in outer superior quadrant of GCIPL and INL quadrants were detected in patients with headache ( p = 0.026 and p = 0.01). Superonasal and inferotemporal sectors of pRNFL were thinner in patients with ocular pain compared to patients without ocular pain ( p = 0.024 and p = 0.015). Integrity of EZ, ELM and IZ was evaluated as continuous line and protected on each OCT scans. Conclusion The study demonstrated convincing evidence that SARS-CoV-2 can affect the inner and outer retinal layers, with subclinical localized alterations, particularly in patients with headache and ocular pain symptoms during COVID-19 period. Supplementary Information The online version contains supplementary material available at 10.1007/s10792-021-01952-5.
Purpose The purpose of this study is to investigate anatomic and morphologic features of inner and outer retinal layers in patients recovered from COVID-19 with Spectral Domain Optical Coherence Tomography (SD-OCT), whether correlate with any symptoms during disease process. Methods 32 patients recovered from COVID-19 and age- and gender-matched 36 healthy controls were included in this cross-sectional study. Ganglion cell-inner plexiform layer, macular and peripapiller retinal nerve fiber layer (RNFL), inner nuclear layer (INL), outer nuclear layer (ONL), outer plexiform layer (OPL) and the outer retinal hyperreflective bands including external limiting membrane (ELM), ellipsoid zone (EZ) and interdigitation zone (IZ) were examined with SD-OCT. The differences of each retinal layers thickness among subgroup analysis of ocular pain and headache were also compared. Results Macular RNFL of inner and outer nasal and outer inferior quadrants were thinner in COVID-19 patients compared to healthy control group ( p = 0.046, p = 0.014 and p = 0.016, respectively). Thinning in outer superior quadrant of GCIPL and INL quadrants were detected in patients with headache ( p = 0.026 and p = 0.01). Superonasal and inferotemporal sectors of pRNFL were thinner in patients with ocular pain compared to patients without ocular pain ( p = 0.024 and p = 0.015). Integrity of EZ, ELM and IZ was evaluated as continuous line and protected on each OCT scans. Conclusion The study demonstrated convincing evidence that SARS-CoV-2 can affect the inner and outer retinal layers, with subclinical localized alterations, particularly in patients with headache and ocular pain symptoms during COVID-19 period. Supplementary Information The online version contains supplementary material available at 10.1007/s10792-021-01952-5.
Purpose. To quantify the longitudinal changes of the optic nerve head (ONH) parameters and peripapillary retinal nerve fiber layer (pRNFL) thickness in patients recovered from coronavirus disease 2019 (COVID-19) using spectral-domain optical coherence tomography (OCT) analysis. Materials and Methods. In an observational longitudinal study, in patients recovered from COVID-19, ONH OCT images were recorded at least two weeks after recovery from the systemic disease as the baseline and after one and three-month follow-up. Ganglion cell complex (GCC) analysis, ONH parameters, and pRNFL thickness changes were measured. Results. A total of 36 eyes from 18 recovered COVID-19 patients including eleven (61.2%) females were studied. The average age was 35.5 ± 7.5 years. The pRNFL thickness in the nasal lower sector significantly decreased from 77 ± 18 μm in the first post-COVID-19 month to 74 ± 10 μm in the third month ( P = 0.8 ). The average, superior, and inferior pRNFL thickness remained unchanged. The average cup volume significantly decreased from 0.27 ± 0.15 mm3 at baseline to 0.19 ± 0.15 mm3 in the third post-COVID-19 visit ( P = 0.028 ). In terms of ONH morphologies including rim, disc and cup to disc area, and the vertical and horizontal ratio, the changes were not significant over the 3-month study period. Focal loss volume and global loss volume values were not changed significantly. Conclusion. Localized defect in the nasal lower sector of pRNFL is observed in 3-month post-recovery from COVID-19. Larger studies with longer follow-ups are required to reveal the exact changes in ONH parameters.
Purpose To observe the course of glaucoma progression after coronavirus disease 2019 (COVID-19) treatment of patients with a previous history of glaucoma. Design Multicentric observational case-control study Materials and Methods This observational case-control study included total 74 patients with COVID-19 infection who were diagnosed with glaucoma previously. The study focused on the left eye of 37 patients each were treated as inpatient or outpatient. Age, gender, existence of systemic and ocular diseases, symptoms, laboratory results, drugs used for COVID-19 and glaucoma, length of hospital stay, intraocular pressure (IOP), and central corneal thickness (CCT) values were recorded. Peripapillary retinal nerve fiber layer thickness (ppRNFLT), ganglion cell–inner plexiform layer complex thickness (GCIPLT) and vertical cup-disc (C-D) ratio results were compared before (pre-COVID-19) and after (post-COVID-19) COVID-19 treatment in both groups. Results A significant increase was observed in IOP values in both inpatient and outpatient groups (p = 0,02, p < 0,01 respectively) after COVID-19 infection. However, mean difference (MD) was higher in inpatient group for IOP levels (-1,76). Inpatient and outpatient groups showed statistically significant decrease in GCIPLT values post-COVID-19 (p < 0,01 and p = 0,02, respectively). In addition, MD value was higher in inpatient group (2,72). A significant decrease was observed in ppRNFLT values in inpatient group after COVID-19 infection (p = 0,03). In both groups, the mean C-D ratio was higher post-COVID-19. Conclusion PpRNFLT and GCIPLT values were reduced and IOP and C-D ratio values were increased in glaucoma patients after COVID-19 infection. Infection progression observed to be worse in inpatient group.
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