👉 Keratina, also known as Keratoconjunctivitis Rademontis (CRD), is a common and often painful inflammation of the conjunctiva, or the clear membrane that lines the surface of the eye. The symptoms of CRD can include redness, swelling, irritation, and sometimes pain. It is typically caused by an allergic reaction to dust mites, molds, or other allergens in the air, as well as certain medications or irritants. The exact