An instrument for subretinal implantation comprising an elongate tube having a distal end and a proximal end, the tube having a lumen passing from the proximal end to the distal end, the distal end having a distal tip, wherein the lumen forms an opening in the tip, the instrument further including a...http://www.google.es/patents/US6579256?utm_source=gb-gplus-sharePatente US6579256 - Instrument for subretinal implantation