Red, irritated eyes can quickly affect the way you feel throughout the day. Burning, itching, watery discharge, swollen eyelids, or a gritty sensation may make it difficult to work, use digital screens, or spend time outdoors. Social media posts sometimes suggest that guava leaves can make severe eye redness disappear within hours. Although guava leaves contain plant compounds studied for antioxidant and antimicrobial properties, there is not enough reliable clinical evidence to show that they can safely clear red eyes or replace medically appropriate eye drops. More importantly, homemade guava-leaf liquid should never be placed directly into the eyes. Products used in the eyes must be sterile because contaminated liquids can cause serious infections. Here is a balanced look at guava leaves, common causes of eye redness, and safer ways to soothe mild irritation. Why Do Eyes Become Red and Irritated? Redness develops when small blood vessels on the surface of the eye expand or...