Management of failing filtering blebs with the Argon laser.

Using the Argon laser and a special lens, the authors have developed a technique for cutting trabeculectomy flap sutures through the overlying conjunctiva. The technique is described and three case reports are presented. The availability of this technique permits suturing the scleral flap tightly, thus minimizing postoperative flat chambers. If filtration is inadequate in such cases, suture cutting with the laser can open the flap and permit more successful filtration.