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To evaluate retinal and choroidal thickness with optical coherence tomography (OCT) to detect retinal and choroidal pathologies in coronavirus disease 2019 (COVID-19) patients with high D-dimer levels. Thirty patients who were hospitalized in the intensive care unit due to severe acute respiratory syndrome coronavirus 2 and whose D-dimer levels were high during this period, who applied to the internal medicine outpatient clinic between 15 and 30 days after discharge, and 30 healthy volunteers with similar age and gender as the control group was included in the study. After full ophthalmological examination, central foveal and choroidal thicknesses were evaluated using optical coherence tomography. Statistical analysis of the study data demonstrated that there was no significant difference between the groups in terms of age or gender (p > 0.05). There was also no statistically significant difference between the groups in terms of central foveal thickness, central choroidal thickness, or nasal 500, nasal 1500, temporal 500, or temporal 500 micron distances (p > 0.05 for all parameters). Choroidal and retinal vascular thicknesses were not affected in the short term in COVID-19 patients hospitalized in the intensive care unit.

Background: In our study, antibody positivity was evaluated by two methods in vaccinated and unvaccinated people according to their demographic characteristics and history of COVID-19. Methods: In this study, venous blood samples were taken from patients who were requested to have COVID-19 antibodies from our hospital's outpatient clinics between February 2022 and March 2022. Results: There was no statistically significant difference when IgG antibody positivity was compared according to the age ranges in chemiluminescence and immunochromatographic methods. When patients were evaluated according to antibody titers, it was found that 81% of the seronegative patients were unvaccinated and had not had Covid-19, and it was found that this group was statistically significant compared to other groups. Conclusions: It has been concluded that it will be of great importance for every country, even every region, to have a test and vaccine policy for diagnosis and follow-up in the fight against COVID-19.