Granular conjunctivitis is a condition that causes inflammation of the conjunctiva, the clear membrane that covers the white part of the eye. This condition is often caused by an allergic reaction or a bacterial or viral infection. There are several synonyms for granular conjunctivitis, including phlyctenular conjunctivitis, vernal conjunctivitis, and giant papillary conjunctivitis. Phlyctenular conjunctivitis is characterized by the formation of small bumps or nodules on the conjunctiva, while vernal conjunctivitis is more common in younger individuals and causes intense itching and discharge. Giant papillary conjunctivitis is often associated with contact lens use and can cause discomfort and irritation. All these conditions require prompt medical attention to prevent serious damage to the eyes.