<prompt> Chassar moir surgery is done is case of :Uterine inversionVesicovaginal fistula repairUreterovesical fistula repairRetroveed uterus  <response>: Chassar moir technique is widely used in repair of vesicovaginal fistula. Vagina and bladder are separated all around by flap splitting method and sutured separately in two layers. Reference: Chapter 18; Genital fistula and urinary incontinence; Shaw;s textbook of gynecology- 16th edition 