An intraretinal delivery and withdrawal instrument which has (a) a curved, distal frame for insertion into an orbit, which insertion is effected (i) inferior to the supraorbital ridge, (ii) superior to the eye, and (iii) in a caudal direction so as to reach the retina; (b) a tip for penetration into...http://www.google.es/patents/US5409457?utm_source=gb-gplus-sharePatente US5409457 - Intraretinal delivery and withdrawal instruments
