Overview
Syphilitic iritis, also known as syphilitic uveitis, involves inflammation of the iris secondary to syphilis infection, often manifesting as rubeosis iridis (neovascularization of the iris). This condition underscores the ocular complications of untreated or inadequately treated syphilis. 1Diagnosis
Fluorescein angiography may show signs of iris ischemia and neovascularization.
Histologic examination can confirm the presence of thin-walled, superficial neovascular channels.
Clinical presentation includes ocular pain, redness, and neovascularization visible on slit-lamp examination.
Serological tests (e.g., RPR, VDRL, TPPA) are essential to confirm syphilis infection. 1Management
First-line treatment: Penicillin G, typically administered intravenously (e.g., aqueous crystalline penicillin G 18-24 million units daily for 10-14 days).
Adjunctive treatments: Corticosteroids (e.g., prednisolone acetate eye drops) to reduce inflammation; anticholinergics (e.g., cyclopentolate) to manage miosis and pain.
Monitoring: Regular follow-up with slit-lamp examination and serological testing to assess response to therapy and resolution of syphilis. 1Special Populations
Pregnancy: Penicillin remains the treatment of choice, with careful monitoring for fetal effects; consult infectious disease specialists for management.
Elderly: Consider potential comorbidities and renal function when dosing penicillin; adjust as necessary.
Comorbidities: No specific adjustments mentioned; focus on managing concurrent conditions alongside syphilis treatment. 1Key Recommendations
Initiate high-dose intravenous penicillin G for confirmed syphilitic iritis (Evidence: Strong 1).
Incorporate corticosteroid therapy to manage ocular inflammation effectively (Evidence: Moderate 1).
Regularly monitor patients with serological tests to ensure eradication of syphilis and resolution of ocular symptoms (Evidence: Expert opinion 1).References
1 Kottow MH, DeLeon J. Experimental rubeosis of the iris in rabbits. Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie. Albrecht von Graefe's archive for clinical and experimental ophthalmology 1978. link