Book excerpt: For many years diagnosing macular edema at an early stage has been a main difficulty. Recently, multiple and remarkable advances of modern imaging technologies which allow recognition of the main etiologies, have immensely improved its diagnosis and treatment. In this volume different patterns and etiologies of macular edema are described and the importance of preserving the photoreceptors at an early stage in order to retain center visual acuity is discussed. It brings together the most recent data and evidence-based medicine, and, on the other hand, the pathophysiological basis of macular edema and the different approaches for drug delivery to the posterior segment are presented. Recommendations for treatment procedures or different therapies have been carefully analyzed and considered prior to inclusion. 'Macular Edema - A Practical Approach' provides the ophthalmologist with a synthesis of knowledge to diagnose, to determine etiology, and to offer the patient viable treatment options for his benefit.