H15-H22: Disorders of sclera, cornea, iris and ciliary body

H16: Keratitis

Keratitis refers to a group of inflammatory conditions affecting the cornea, which is the clear, dome-shaped surface that covers the front of the eye. These conditions can be caused by an array of factors including bacterial, viral, or fungal infections, as well as non-infective causes such as injury, exposure to irritants, or autoimmune disorders. Individuals with keratitis might experience symptoms like pain, redness, tearing, blurry vision, sensitivity to light or feeling like something is in the eye. The progression of these conditions varies, ranging from mild discomfort to serious damage to the cornea, potentially leading to vision loss. Keratitis primarily affects the visual system, yet can be associated with systemic infections or disorders.