Background: COVID-19 affects all organ systems, including the visual organs. Clinical manifestations encompass all segments of the eye. Neuro-ophthalmic manifestations are rare and can occur during the acute phase of the illness, during recovery, or in the course of Long COVID. These clinical manifestations include optic neuritis and various forms of encephalomyelitis. Optic neuritis more commonly occurs during the recovery phase from the acute form or during Long COVID. Family physicians are in a position to first diagnose optic neuritis in the early stages. Objective: The aim of this paper is to present a case of optic neuritis occurring in the early stages of the disease, diagnosed in the prehospital period in a family medicine practice with consultations from ophthalmologists, infectologists, and neurologists. Such close collaboration enabled the early administration of corticosteroid therapy. Case report: A case of a 28-year-old woman is presented, who exhibited symptoms of COVID-19 with a confirmed positive antigen for the SARS-CoV-2 virus (PCR nasopharyngeal swab). On the fourth day of illness, sudden loss of vision in the right eye occurred along with headache. Early diagnosis and early administration of corticosteroid therapy led to significant improvement in vision. Conclusion: Clinical manifestations of eye diseases can occur in the early stages of COVID-19 as a direct consequence of viral infection. Ophthalmologist and neurologist examinations are necessary in the early stages of the disease for timely diagnosis of various ophthalmologic and neurologic disorders and adequate therapy.