Serial wide-field fluorescein angiography was performed on 12 preproliferative central retinal vein occlusion eyes in the 3-year Rubeosis Anti-VEGF ( RAVE ) trial using the Staurenghi lens ( Ocular Staurenghi 230SLO Retina Lens ) with a scanning laser ophthalmoscope ( Heidelberg HRA Spectralis ) .