Case ReportsVitreous hemorrhage possibly due to retinal arterial microaneurysm post-severe acute respiratory syndrome coronavirus 2 vaccinationTatsuya Sakamoto1, Daisuke Nagasato1,2,3*, Hayato Tanaka1, Tomoki Shirakami1, Keigo Murata1, Shunsuke Nakakura1, Toshihiko Nagasawa1, Yoshinori Mitamura3, Hitoshi Tabuchi, MD, PhD1,21Department of Ophthalmology, Tsukazaki Hospital, Himeji, Hyogo, Japan2Department of Technology and Design Thinking for Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Hiroshima, Japan3Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Tokushima, JapanContributorsTatsuya Sakamoto, MD, E-mail: t.sakamoto@tsukazaki-eye.netDaisuke Nagasato, MD, PhD, E-mail: d.nagasato@tsukazaki-eye.netORCID iD: 0000-0003-3956-9352Hayato Tanaka, MD, E-mail: h.tanaka@tsukazaki-eye.netTomoki Shirakami, MD, PhD, E-mail: t.shirakami@tsukazaki-eye.netKeigo Murata, MD, E-mail: k.murata@tsukazaki-eye.netShunsuke Nakakura, MD, PhD, E-mail: s.nakakura@tsukazaki-eye.netToshihiko Nagasawa, MD, PhD, E-mail: t.nagasawa@tsukazaki-eye.netYoshinori Mitamura, MD, PhD, E-mail: ymitaymitaymita@yahoo.co.jpHitoshi Tabuchi, MD, PhD, EMBA, E-mail: h.tabuchi@tsukazaki-eye.netORCID iD: 0000-0002-9098-0430*Corresponding authorDaisuke Nagasato68-1 Aboshi Waku, Himeji City, Hyogo Prefecture 671-1227, JapanTel: +81 79-272-8555; Fax: +81 79-272-8550E-mail: d.nagasato@tsukazaki-eye.net

Retinal arterial macroaneurysm shows rapid vision loss when rupture occurs; therefore, preventive photocoagulation should be considered, if necessary.

A patient with dacryocystitis who had a regular ophthalmology visit canceled the regular visit with a COVID-19 pandemic. After that, serious deterioration was observed and emergency evisceration was performed. Even during COVID-19 pandemic, so it is necessary to continue regular eye examinations and infection treatment.