“…[1][2][3][4] The key steps for a successful outcome are creation of an ostium large enough to completely expose the entire length of the lacrimal sac, full-length sac marsupialization, and complete mucosa to mucosa approximation to encourage healing by primary intention. [1][2][3][4] Superior osteotomy is an important step to achieve full exposure of the sac, and various modalities have been employed to achieve this, including use of chisel and mallet, special bone nibblers, lasers, mechanical burrs, and ultrasonic emulsification. 2,[5][6][7][8] Mechanical burrs are popular and commonly used for quick removal of the superior bone; however, ultrasonic emulsification is fast emerging as an alternative and safe powered instrument, although there is limited data on the surgical outcomes using the ultrasonic instruments.…”