Insights into ocular syphilis in Nepal.

Abstract

This study aims to elucidate the demographic characteristics, clinical features, diagnostic approaches, and medical management of patients with ocular syphilis, known as 'the great masquerader,' at a tertiary eye care center in Nepal. We conducted a retrospective review involving 15 eyes from ten patients with ocular syphilis treated at a uveitis referral center between 2020 and 2022. Lumbar puncture was performed if neurosyphilis was suspected. Treatment success was defined as the absence of ocular inflammation in both eyes and a decrease in Veneral disease research laboratory (VDRL) titres after completing therapy. A total of 15 eyes of 10 patients were diagnosed with syphilitic uveitis based on positive treponemal and non-treponemal serological tests. The mean age of the patient was 39.9years (range 22-54years) with an equal distribution between males and females. HIV coinfection was not found in any of the patients. Syphilitic uveitis was the primary presentation in nine patients (90%), while one patient presented with recurrent nodular scleritis. Ocular involvement was bilateral in 50% (5 patients). The mean duration between the initial symptom and the first presentation was 8.7weeks (range: 4days to 24weeks). The most common ocular findings was panuveitis (6 eyes). Eight patients with early syphilis received weekly intramuscular injections of benzathine penicillin G for 3 weeks whereas 2 patients with neurosyphilis were treated with intravenous ceftriaxone 1 gm twice a day for 14 days. Signs and symptoms of majority of patients improved with systemic therapy for syphilis. Syphilitic uveitis should be included in the differential diagnosis of any form of ocular inflammation.