The palpebral conjunctiva is richly vascularized and mild insults may increase the blood flow. Often the first sign of inflammation.
Papillae are raised areas on the palpebral conjunctiva and have a central blood vessel. The presence of papillae on the upper tarsal conjunctiva >1.0mm diameter is indicative of giant papillary conjunctivitis or vernal keratoconjunctivitis.
Follicles are accumulations of white blood cells within the palpebral conjunctiva without a central blood vessel. Follicles accompany viral infections of the conjunctiva and are not CL-related.
Concretions are pale yellow accumulations of inorganic type material beneath the epithelium of the palpebral conjunctiva. They may cause a foreign body sensation. Not CL-related.
Refer to the individual conditions for the differential diagnosis conditions shown in the diagram below. Click on images to view enlargement.
Hyperemia - Palpebral Conjunctiva
Junctional Papillae (Normal)
CLPC (Contact Lens Papillary Conjunctivitis)
Video: Contact Lens Papillary Conjunctivitis (CLPC) - Severe (White Light)
Contact Lens Papillary Conjunctivitis (CLPC) - Severe (White Light)