<prompt> The standard sutureless cataract surgery is done with phacoemulsification and foldable IOL has an incision of1mm1.5mm2mm2.5min3mm3.5mm3.5mm4.5mm  <response>: In phacoemulsification, the nucleus is emulsified using high frequency sound waves and then sucked out of the eye through a small 3.2 mm incision. 