Surgery for retinal detachment means bimanual vitrectomy and the usage of a chandelier light. Bimanual vitrectomy is an essential part of modern minimal incision vitreoretinal surgery (MIVS). By inserting a stationary chandelier light in the sclera (four-port vitrectomy, Fig. 18.1), the surgeon has two active hands. To operate with two active hands is a new and exciting method of surgery. For example, in retinal detachment surgery, you can indent the sclera with one hand and vitrectomize the vitreous base with the other hand. In diabetic retinopathy, you can apply laser photocoagulation up to the ora serrata with the help of a scleral depressor. You can remove membranes with two different instruments and also apply counteraction and so on.