You don't say how old you are or if this is something new, but it sounds like dry eye syndrome. It can ocurr at any age but generally not until the 30's. If your eyes feel gritty like you have sand or dirt in them and it is painful, it could be the start of it. When the tear ducks quit producing the fluid and lubricant needed to cleanse the eye properly the surface of the eyeball becomes sticky and does not wash out normal debris that generally is washed out each time you blink. Do see an opthamologist in the event this is the case. They can prescribe lubricating eye drops that replace what has been lost. Restasis is one of the best, and not only lubricates the eye, but acually promotes the production of normal tear activity to further aid the eye in cleansing itself naturally. The more you use it the more normal tear production you will experience. If the problem is just a random ocurrance it could just be the beginning of different allergies, however if it is a daily thing and persists throughout the year, you probably have the beginnings of dry eye syndrome. Better to get it checked, then wonder and be miserable.