Foveal avascular zone in idiopathic juxtafoveolar telangiectasia.

We measured angiographically the foveal avascular zone (FAZ) in 26 subjects with idiopathic juxtafoveolar telangiectasia (IJFT) and 27 control subjects. Quantitatively, FAZ was significantly smaller in IJFT (median = 0 mm2) than in controls (median = 0.405 mm2). Qualitatively, the telangiectasia in IJFT was temporal (92.5% of eyes) and appeared as microaneurysms interconnected with several capillaries, spider-shaped microaneurysms, or Coats'-like telangiectasia. IJFT is characterized by temporal telangiectasia and small FAZ.