Macular edema is a serious eye disorder that can be seen in many conditions. Central retinal vein occlusion (CRVO) and branch retinal vein occlusion (BRVO) are frequent causes of decreased central visual acuity (VA) related to the appearance of macular edema (ME) and ischemia. This book discusses the risk factors, treatment options and long-term outcomes of macular edema. Some of the topics discussed include the management of diabetic macular edema; management of macular edema secondary to retinal vein occulsion by intravitreal bevacizumab; and macular edema in important tropical infections.