A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides...http://www.google.com/patents/US7563222?utm_source=gb-gplus-sharePatent US7563222 - Methods and apparatus for intraocular brachytherapy