Red eye is a type of conjunctivitis, experts say, commonly known as “red eye” is infectious conjunctivitis, an acute infectious conjunctivitis. The medical term conjunctivitis has the pathology of general inflammation: swelling, bright red conjunctival congestion, water, foreign body sensation, exudation and infiltration. Conjunctivitis is not the same as pink eye. This is a misconception about pink eye and conjunctivitis, and this misconception can cause some patients to delay the condition and miss the best time for treatment. In fact, red eye is a kind of conjunctivitis, commonly known as “red eye” is infectious conjunctivitis, is a kind of acute infectious conjunctivitis. The medical term conjunctivitis has the pathology of general inflammation: swelling, bright red conjunctival congestion, water, foreign body sensation, exudation and infiltration. Red eye is an eye disease transmitted by contact, which is its most important feature, such as contact with towels, washing utensils, faucets, door handles, water from swimming pools, and common toys used by patients. Therefore, the disease often spreads widely in kindergartens, schools, hospitals, factories and other collective units, causing outbreaks and epidemics. Whenever you feel foreign body sensation and congestion in your eyes, you should go to the hospital promptly and seek symptomatic treatment after diagnosis.