An Overview of Ophthalmic Complications Associated With Emerging/Re-Emerging Viruses: Focus on ZIKV, DENV, SARS-CoV-2, and MPXV.

Infections caused by emerging and re-emerging viral pathogens are currently known as a significant global public health issue, affecting various human organ systems such as the ocular system. Several emerging and re-emerging viral infections, such as those caused by Zika virus (ZIKV), dengue virus (DENV), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and monkeypox virus (MPXV), have been involved in the development of various ophthalmic disorders including uveitis, conjunctivitis, retinitis, optic neuritis, and more severe vision-threatening complications. The present review comprehensively describes the ophthalmic manifestations linked to these viruses, with a primary focus on their underlying pathogenesis, diverse clinical presentations, and the intricate potential mechanisms of viral invasion into ocular tissues. Describing the ocular involvement of emerging and re-emerging viral pathogens, particularly how they target and affect the ocular system, is critical for early diagnosis, appropriate management, and reducing long-term visual manifestations in affected patients. This review aims to address existing gaps in clinical knowledge and support timely ophthalmological management during emerging viral outbreaks.