Figure 5: (a)–(d) Intraoperative photographs of CLASS. (a) Peritomy and tenonectomy within the exposed sclera. (b) Lamellar scleral flap dissection with a crescent knife. (c) Progressive CO2 laser dissection of the deep sclera and Schlemm’s canal towards the trabeculo-Descemet’s membrane to achieve aqueous percolation. The laser beam is not visible in the picture. (d) Closure of the scleral flap and conjunctiva, a nice filtering bleb.