Nonpenetrating glaucoma surgery (NPGS) is indicated in any open-angle glaucoma patients who are considered for trabeculectomy. The postoperative management of NPGS is similar to that following a standard trabeculectomy. Patients are placed on topical antibiotics and steroids. Subconjunctival antimetabolite injections are used in a parallel manner with respect to indication, technique, timing, and dosing. The most challenging step of NPGS is the dissection of the deep scleral flap with regards to achieving the appropriate depth and avoiding inadvertent penetration into AC. NPGS has emerged as a viable and potentially superior alternative to the standard penetrating procedures in the surgical management of glaucoma. NPGS can be a good surgical option, particularly in patients with early stages of glaucoma with less risk than penetrating procedures while achieving acceptable intraocular pressure targets. NPGS remains more technically challenging than penetrating procedures with steep learning curves.