Usually, the condition develops gradually and is accompanied by itching, burning, and a gritty or sandy sensation in the eye. One type, allergic conjunctivitis, causes intense eye itching as well as sneezing and a stuffy nose. As we age, the eyes produce fewer tears. An inadequate layer of tear film causes the eye to become dry, scratchy, red and painful. Certain medical conditions, such as Sjogren s syndrome and rheumatoid arthritis, may also cause dry, red eyes.
Antihistamines are useful to control red eyes due to allergies.
A third group, artificial tears and lubricants, provide extra moisture for dry eyes. But overuse of certain drops can lead to a rebound effect, making the eyes more red and irritated. Patients also need to be sure they are using the right eye drop for their problem. A doctor or pharmacist can help you decide if you need artificial tears, a vasoconstrictor, antihistamine, or antibiotics. If red eye appears suddenly or is associated with any other symptoms, talk to your doctor.