The World Diabetes Day is observed on November 14.As part of its World Diabetes Day events Sankara Nethralaya will hold a free eye camp in Chennai on November 15 at Navasuja Sankara Nethralaya in R A Puram from 8am. Anybody can walk in to the camp and undergo free eye screening in terms of visual assessment, eye pressure checkup, retinal imaging and counselling on diabetic retinopathy.