Conjunctivitis
WHAT IS CONJUNCTIVITIS?
Conjunctivitis is also known as "pink eye." It is when the covering of the white part of the eyeball becomes swollen or irritated. When conjunctivitis happens, the eyes may get a feeling of burning, itching, or irritation. There can also be blurry vision and crusting on the eyelashes. The eyes can also get discharge, which can be watery or thick and yellow or green.
WHAT CAUSES CONJUNCTIVITIS?
Conjunctivitis can be caused by many things. It can be from infections like bacteria or viruses. It could also be caused by allergies or irritation from chemicals. Other things can look like “pink eye” like something stuck in the eye, a scratch on the eye surface, eye inflammation, or high eye pressure. It is important to see a doctor to find out the cause of conjunctivitis.
IS CONJUNCTIVITIS CONTAGIOUS?
It can be contagious if it is caused by bacteria or viruses [See Figure 1].
Fig. 1: Bacterial Conjunctivitis. This photo shows a pink eye with some crusting on the lower eyelashes.
HOW IS CONJUNCTIVITIS TREATED?
Treatment for conjunctivitis depends on what causes it. If it’s from a bacteria, you may need antibiotic eye drops or ointment. If it’s from a virus or cold, you do not need antibiotics because they will not work. The treatment for conjunctivitis from a virus is usually artificial tear eye drops. If it’s from allergies, eye drops for allergies, allergy medicine by mouth, and artificial tears can help. Remember to use the medicine for the full time your doctor prescribes it.
CAN CONJUNCTIVITIS AFFECT MY VISION?
Most types of conjunctivitis go away without causing long-term problems. However, some serious infections, like certain viral infections, can cause vision problems if not treated properly.
HOW CAN I PREVENT CONJUNCTIVITIS?
Washing your hands often is the best way to prevent pink eye and stop it from spreading. You should also avoid touching your eyes or face.
If you wear contact lenses, always wash your hands before putting in or taking out your lenses. Regularly clean and replace your contact lenses as recommended. Never swim in lakes or hot tubs while wearing contact lenses. If you do have conjunctivitis, don’t wear your contact lenses until you’re healed and be sure to use a new pair once you are better.
For more detailed information on conjunctivitis, visit: https://eyewiki.org/Conjunctivitis
Updated 03/2025
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