[Comment on indications of Ex-Press miniature implant surgery].

Ex-Press miniature implant surgery (Ex-Press implantation) is a new alternative anti-glaucoma surgery. It is clinically important to clarify its indications. Ex-Press implantation has been indicated appropriate in primary open-angle glaucoma and should not be used in narrow angle-closure glaucoma and in high risk of failed scarring cases. More evidence-based studies are still needed to convince the pros and cons in other conditions including aphakia or pseudo-phakia glaucoma, secondary open-angle glaucoma and refractory glaucoma.