<prompt> Posterior capsulotomy after cataract is done usingArgon LaserNd YAgHolmiumDiode laser  <response>: Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 214 - 215After cataract, if thin, can be cleared centrally by Nd: YAG laser capsulotomy. Dissection with cystitome or Zeigler;s knife also be used. Thick membranous after cataract needs surgical membranectomy. 