Retinal Vasculitis in a Patient With Mixed Connective Tissue Disease Following COVID-19 Infection: Correlation or Coincidence?

We report the systemic and ophthalmic findings in a female patient with mixed connective tissue disease (MCTD) who subsequently developed retinal vasculitis following coronavirus disease 2019 (COVID-19) reinfection. The patient was a known case of MCTD maintained in remission on immunosuppressive treatment. She subsequently developed retinal vasculitis with areas of capillary non-perfusion in the right eye. This was a finding not seen previously. She was started on an enhanced immunosuppressive regimen along with scatter laser photocoagulation. COVID-19 has been reported to lead to the development of autoimmune disease, both de novo as well as the worsening of pre-existing disease. The onset of retinal vasculitis may potentially be due to a post-COVID-19 exacerbation of her pre-existing MCTD. Physicians should be aware of this possibility and screen for the same.