Gwybodaeth i'r cyhoedd (Welsh) Word 140 KB 12 April 2010 Treating branch retinal vein occlusion by cutting the sheath to separate the artery and vein (Large print) PDF 46 KB 24 March 2010 Treating branch retinal vein occlusion by cutting the sheath to separate the artery and vein PDF 57 KB 24 March 2010