Eye Diseases Conjunctivitis. Conjunctivitis is a general term for infection of the membrane covering the inner eyelid and pupil of the eye. This membrane is called the conjunctiva. Bacterial conjunctivitis is also known as pinkeye. It is caused by numerous bacteria, most commonly the Gram-negative rod Haemophilus aegyptius. The disease is characterized by red, itchy eyes with an exudate. It is highly contagious and is transmitted by droplets and contact to other individuals. Various ointments and fluids containing neomycin are used for therapy. Trachoma. Trachoma is a bacterial infection of the eye caused by Chlamydia trachomatis. This organism is an extremely tiny chlamydia. It causes an infection of the cornea in which rough, sandy, pebblelike growths occur and interfere with vision. Tetracycline and other antibiotics are used for treatment. Transmission usually occurs by contact.
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