Karahan M, Demirtaş AA, Hazar L, et al. - Researchers conducted the study for recognizing dysfunctions in the autonomic nervous system (ANS) with changes in dynamic and static pupillary responses in patients who recovered from coronavirus disease-2019 (COVID-19). Patients were subjected to eye examinations one month after recovery from COVID-19. Using a pupillometry system, pupillary responses were measured. Patients recovering from COVID-19 had impaired pupil responses, which are controlled by the ANS. Pupillometry appears to have potential as a non-invasive, simple-to-use diagnostic tool for detecting autonomic dysfunction in patients recovering from COVID-19.