The Siepser sliding knot technique and its modifications proved invaluable in reducing the chances of intraoperative complications. long needle with 9-0 or 10-0 polypropylene suture is advanced through 1 stab incision, passed through the proximal and distal iris leaflets and then retrieved out with the help of a cannula inserted through another stab incision. A microhook is used to retrieve a loop of the distal part of the suture through the first stab incision. Two throws are made by passing the trailing end of the suture down through the loop. The suture ends are gently pulled so that the suture knot slips inside, drawing the iris leaf lets together. The distal suture loop is again retrieved through the stab incision. Siepser sliding knot involves passing the trailing end of suture twice from below upward through the second loop. Osher et al8 suggested passing the trailing end once through the loop from below upwards, directing it under the trailing strand and then pulling the suture ends to slide the locking knot. A conceptually and technically simplified procedure called single­pass four-throw pupilloplasty (SFT), that ensures the formation of a non-loosening knot with minimal manipulation of the iris tissue was introduced by Narang and Agarwal.9 This technique is a variation of the modified Siepser slip- knot technique. It involves retrieving a loop of suture from the distal end, in a similar fashion, as is done in the modified Siepser slip- knot technique. One can also make the pupil into a pinhole with this method so that astigmatism prob lems are solved (Videos 1-1 and 1-2). Instead of passing the proximal suture- end twice through the loop, this technique involves 4 throws through the loop (Figure1-7). The helical knot is then made to slip into the anterior chamber. The procedure can be repeated on other areas of the iris to fashion a round, smaller sized pupil.