Dry eye syndrome, or dry eye disease, occurs when the eyes do not make enough tears, or the tears evaporate too quickly because the oil glands are blocked or abnormal.
Our Health A-Z contains more information on Dry eyes.
Conjunctivitis is redness and inflammation of the thin layer of tissue that covers the front of the eye (conjunctiva).
Our Health A-Z contains more information on Infective conjunctivitis.
Blepharitis is inflammation of the rims of the eyelids, which causes them to become red and swollen.
Our Health A-Z contains more information on Inflammation of eyelids.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.