Ocular Manifestations of Flavivirus Infections

Area of Science:

• Virology
• Ophthalmology
• Public Health

Background:

• Flaviviruses are RNA viruses transmitted by arthropods, causing widespread endemic and epidemic diseases.
• Ocular manifestations are increasingly recognized across various flavivirus infections, including dengue, West Nile, yellow fever, Japanese encephalitis, and Zika virus.
• These viral infections pose significant global health challenges due to their expanding reach and potential for severe systemic morbidity.

Purpose of the Study:

• To comprehensively review the current knowledge on ophthalmic manifestations associated with major flavivirus infections in humans.
• To summarize the spectrum of ocular symptoms and signs linked to flavivirus diseases.
• To highlight diagnostic strategies and current therapeutic and preventive measures.

Main Methods:

• Literature review of scientific articles and clinical case reports.
• Synthesis of information on flavivirus transmission, pathogenesis, and ocular involvement.
• Analysis of diagnostic methods, including clinical evaluation and laboratory testing (RT-PCR, serology).

Main Results:

• Flavivirus infections present a diverse range of ocular manifestations, from conjunctivitis to severe posterior uveitis, maculopathy, and optic neuritis.
• Clinical diagnosis relies on epidemiological data, systemic symptoms, and characteristic ocular findings.
• Laboratory confirmation is crucial for accurate diagnosis of these viral infections.
• While ocular involvement is often self-limiting, it can lead to permanent visual impairment.

Conclusions:

• Ophthalmic involvement is a significant clinical feature of many flavivirus infections, necessitating awareness among healthcare professionals.
• Early diagnosis and appropriate management are critical to prevent irreversible visual loss.
• Development of effective antiviral treatments and widespread vaccination remain key priorities for controlling flavivirus diseases.