There are numerous causes for eye redness, and many of them are not serious. Begoña Domenech Amigot, professor of the Department of Optics, Pharmacology, and Anatomy of the University of Alacant, explains.
We call a mirage seeing objects where they are not. It is an optical illusion that can be seen on very hot days and in places like deserts. Inmaculada Pascual Villalobos explains this and tells us about the «Fata Morgana» effect.
It is important not to overeat food items such as legumes and vegetables, fruits such as pears or plums, dairy products such as milk or cheese, and also products like bread or cereals, with whole grains such as wheat or rye.