Most of the time when i blink my eyes there is a sharp sting in my eyes which persists for some time.There is no redness or swelling,and it pretty much looks fine.It has been for 2 days now and is increasing continuously.Also the pain is also timely as it doesn't stings all the time I blink but is a timely event whose frequency is increasing.The sting is generally in the region away from the nose,but is not area specific.