Bacterial, fungal, or viral infections affecting the eye's clear dome.The cornea, the transparent dome at the front of your eye, plays a vital role in vision. It acts as a protective barrier, shielding the inner structures of your eye from dust, debris, and germs. Unfortunately, the cornea can become susceptible to infections caused by various microorganisms.Causes of Corneal Infections: Bacteria: This is the most common cause of corneal infections. Bacteria can enter the eye through a scratch, injury, while wearing contact lenses, or from contaminated eye solutions. Viruses: Herpes simplex virus is a common culprit, causing recurrent infections that can