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Photocoagulation therapy of leaking archer's type 2 retinal arteriovenous communication
Benjamin Wolff1, Sarah Tick, Salomon Y Cohen
1*Department of Ophthalmology, Fondation Ophtalmologique Adolphe de Rothschild †Department of Ophthalmology, Centre National d'Ophtalmologie des XV-XX ‡Centre Ophtalmologique d'Imagerie et de Laser, Paris, France.
Purpose:
Type 2 retinal arteriovenous communication is characterized by direct arteriovenous communication without an intervening arteriolar or capillary segment. It may be complicated by extravascular exudation. The successful results of low-intensity argon laser photocoagulation in two cases are reported.
Methods:
Case report of two patients.
Results:
Both cases were associated with a serous macular detachment, showing evidence of vascular leakage. Argon laser photocoagulation was performed. Visual improvement was observed in both cases, with disappearance of vascular leakage.
Conclusion:
Type 2 arteriovenous communications lead to increased arterial flow through a low-resistance vein. The resulting high intraluminal pressure may explain the observed vascular ectasia and consequent fluid leakage. Spontaneous regression may occur. Nevertheless, direct argon laser photocoagulation may be considered a therapeutic option and lead to visual improvement.
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