Fig. 10. Maximum congestion in the superficial vascular plexus in episcleritis. The conjunctival and deep episcleral networks are separated from the deep plexus by edema and infiltration in the episcleral tissue. (Watson PG, Hayreh S, Awdry P: Episcleritis and scleritis. Br J Ophthalmol 52(3):278–279, 1968)