Ocular syphilis: the re-establishment of an old disease

PurposeTo present the patient profiles, clinical presentations and visual outcomes in those diagnosed with ocular syphilis, attending a subspecialist uveitis service in northern England over a 15-year period.Patients and methodsRetrospective observational case series of patients presenting between January 2002 and December 2016.ResultsA total of 50 eyes of 34 patients had intraocular inflammation due to syphilis. Of these, 94% were male, and 75% were men who had sex with men. Ten (29%), all male, were HIV-positive. Presentations included isolated anterior non-granulomatous uveitis, intermediate uveitis, panuveitis, retinitis, placoid chorioretinitis and papillitis. Concurrent skin rash and/or headache were seen in 41%. Compliance with antibiotic treatment was complete, but there was a high rate of default from ophthalmological follow-up (38%). Visual improvement was seen in 92% of eyes, and at final assessment 71% had acuity of 6/9 or better.ConclusionsOcular syphilis is continuing to increase in incidence, in tandem with the continuing epidemic of early syphilis in the UK (the risk of ocular involvement being about 1%). Almost all are male, and most are men who have sex with men. Clinical presentation is variable; a high index of suspicion and a low threshold for serological testing is important; early treatment can reverse retinal changes and restore visual acuity.