Redness in the eyes occur when the tiny blood vessels in the eye expand, and this could be triggered for many reasons. Most often, red eyes do not indicate a serious medical emergency, rather an infection like pink eye, or eye fatigue caused by looking at a screen for too long. Sometimes red eyes are accompanied by itching, burning, grittiness, tearing, or discharge. If you have red eyes, and experience discharge, blurry vision, loss of vision, or if the redness persists for an extended period, make an appointment with an ophthalmologist as soon as possible. These are some of the most common reasons why you may be experiencing redness in your eyes.
1. Bacterial or Viral Conjunctivitis
Conjunctivitis is commonly known as “pink eye” because it makes your eyes look pink. It can be caused by bacteria, virus, or allergens. Both bacterial and viral conjunctivitis are very common and very contagious. According to the Center for Disease Control and Prevention (CDC), bacterial conjunctivitis is the leading cause of children being absent from daycare or school. Viral conjunctivitis is usually mild and will clear up by itself within a matter of days. Bacterial conjunctivitis, however, often needs to be treated with antibiotic eyedrops or ointments, although in mild cases it may resolve within a few days.