Conjunctivitis is an inflammation of the transparent membrane covering the white of the eye. It may be caused by a virus, bacteria or an allergy, and typically results in the eye becoming red, together with pain, itching and discharge.
Eye infections may also affect the cornea and cause corneal ulcers or abscesses. Symptoms are similar to those of conjunctivitis but usually lead to decreased visual acuity, pain and discomfort caused by light. They are more common in people who wear contact lenses. Treatments depend on the severity of the infection and may range from simple eye drops to antibiotic injections, or corneal transplants in the most serious cases.