Ocular disorders and associated drug development challenges: the current scenario

Vision is one of the most important human sense and hence eye diseases leading to impairment of vision have been the hot topic for drug delivery research lately. Diseases like glaucoma, cataract, age-related macular degeneration, diabetic retinopathy and trachomatous trichiasis have been known for their potential of visual impairment as well as blindness. A vast amount of research has been done in understanding the pathophysiology, risk factors and drug development and drug delivery challenges associated with these diseases, but the clinical success achieved so far is very sparse. This leading to the requirements for the better understanding of the ocular diseases which can be translated to better drug delivery systems. The current review is formulated with the aims to provide a concise summary of these ocular disorders and to address the challenges in their drug development research.