Eye redness is the appearance of redness in the part of the eye that is exposed to the lid fissure, such as conjunctival congestion and bleeding under the conjunctiva. Red eyes are a perennial pain for many people, and the occasional red eyes make them feel uncomfortable as well as affect their appearance and make others look away. And regardless of the spring, summer, autumn and winter, there are a number of diseases that can cause eye redness, of course, not least many infectious eye diseases, we need to be extra vigilant. But how much do we know about eye redness? Are many of the things we think are “common knowledge” wrong? The common misconceptions about “eye redness” are explained Myth 2: Eye redness is red eye. Comment: Red eyes do not necessarily mean “pink eye”. Many other eye diseases, such as iridocyclitis and acute angle-closure glaucoma, can also have symptoms of red eyes. If these diseases are mistaken for “pink eye” and you order anti-inflammatory eye drops at home, you will miss the time to treat them, which can also cause serious consequences.