—At a Global level Diabetic retinopathy is the essentialroot of blindness among Diabetic patients. According to WHO in India by 2030 nearly 79.4 million people will suffer from Diabetic Mellitus and 18% of the diabetic population suffered by Diabetic retinopathy. Early detection is necessary to reduce the risk of blindnessin case of diabetic Retinopathy. Traditionally Fundus cameras are used for screening of Diabetic Retinopathy but its access is limited to primary health care center also required skilled person and high cost. Now a days to overcome the limitations of fundus camera, smartphone-based fundus camera is used for monitoring the Diabetic retinopathy. This paper illustrates the need of smartphone and elaborates the use of smartphones as fundus camera by using different types of wearable devices/adapters. Smartphone based fundus camera acts as an alternative for examining the fundus for eye care physicians