“…While 60.7% of survivors had no ocular symptoms, 35% were classified as having mild symptoms, involving persistent conjunctival irritation; 3.6% as having moderate symptoms, involving corneal opacities, mild corneal edema, and band keratopathy; and 0.7% as having severe symptoms, which included corneal melting and neovascularization. In a separate, nonoverlapping study involving 134 patients examined 17-22 years after exposure, 83% of survivors presented with ocular complications, which included burning (69%), photophobia (64%), blepharitis (28%), tearing (12%), corneal ulceration (12%), and retinal and conjunctival complications (4.5%) (Namazi et al, 2009). In another study specifically evaluating ocular injury in 40 veterans from 16-20 years after a single, highdose exposure, 39 reported persistent ocular sequelae, including chronic conjunctivitis (17.5%), corneal thinning (15%), limbal ischemia (12.5%), corneal opacity (10%), corneal vascularization (7.5%), and corneal epithelial defects (5%) .…”