The term refractory glaucoma refers to a group of glaucomas which are known not to respond favorably to the usual surgical or medical ocular hypotensive treatment.1.Congenital or infantile glaucoma.2.Neovascular glaucoma.3.Glaucoma in aphakia and pseudophakia.4.Glaucoma in blacks.5.Glaucoma associated with uveitis.6.Malignant glaucoma.7.Post keratoplasty glaucoma.As different types of refractory glaucoma are resistant to medical and surgical management, laser plays an important role in treating refractory glaucoma by different methods using different types of laser:Laser cyclophotocoagulationLaser sclerostomyMiscellaneous laser treatment