Bacterial Conjunctivitis

Conjunctivitis is an irritation (inflammation) of the clear membrane that covers the white part of the eye (conjunctiva). The irritation can also happen on the underside of the eyelids. Conjunctivitis makes the eye red or pink in color. This is what is commonly known as pink eye.


  • Infection from a germ (bacteria) on the surface of the eye.

  • Infection from the irritation or injury of nearby tissues such as the eyelids or cornea.

  • More serious inflammation or infection on the inside of the eye.

  • Other eye diseases.

  • The use of certain eye medications.


The normally white color of the eye or the underside of the eyelid is usually pink or red in color. The pink eye is usually associated with irritation, tearing and some sensitivity to light. Bacterial conjunctivitis is often associated with a thick, yellowish discharge from the eye. If a discharge is present, there may also be some blurred vision in the affected eye.


Conjunctivitis is diagnosed by an eye exam. The eye specialist looks for changes in the surface tissues of the eye which take on changes that point to the specific type of conjunctivitis. A sample of any discharge may be collected on a Q-Tip (sterile swap). The sample will be sent to a lab to see whether or not the inflammation is caused by bacterial or viral infection.


Bacterial conjunctivitis is treated with medicines that kill germs (antibiotics). Drops are most often used. However, antibiotic ointments are available and may be preferred by some patients. Antibiotics by mouth (oral) are sometimes used. Artificial tears or eye washes may ease discomfort.


  • To ease discomfort, apply a cool, clean wash cloth to the eye for 10 to 20 minutes, 3 to 4 times a day.

  • Gently wipe away any drainage from the eye with a warm, wet washcloth or a cotton ball.

  • Wash your hands often with soap. Use paper towels to dry.

  • Do not share towels or wash cloths. This may spread the infection.

  • Change or wash your pillow case every day.

  • You should not use eye make-up until the infection is gone.

  • Do not operate machinery or drive if vision is blurred.

  • Stop using contacts lenses. Ask your eye professional how to sterilize or replace them before using again. This depends on the type of contact lenses used.

  • Do not touch the edge of the eyelid with the eye drop bottle or ointment tube when applying medications to the affected eye. This will stop you from spreading the infection to the other eye or to others. Do as your caregiver tell you.


  • The infection has not improved within 3 days of beginning treatment.

  • A yellow discharge from the eye develops.

  • Pain in the eye increases.

  • The redness is spreading.

  • Vision becomes blurred.

  • An oral temperature above 102° F (38.9° C) develops, or as your caregiver suggests.

  • Facial pain, redness or swelling develops.

  • Any problems that may be related to the prescribed medicine develops.


  • Understand these instructions.

  • Will watch your condition.

  • Will get help right away if you are not doing well or get worse.