<prompt> Which of the following instrument is NOT used in intracapsular extraction of lensCryoElschnings forcepsPhaco-emulsifireVan-graefes cataract knife  <response>: C i.e. Phaco-emulsifier Phacoemulsifier which emulsifies lens nucleus coical matter by ultrasonic vibration 1 mm titanium needle vibrating 40,000 timessecond is used in phacoemulsification method of ECCE not in ICCE. 