In 1950, Phillips Thygeson published case reports on a superficial punctate keratitis (inflammation of the cornea) that he described as a condition involving corneal opacities. Today, this condition, now known as Thygeson superficial punctate keratitis (TSPK), is a chronic one, lasting years to decades. It typically comes and goes, causing discomfort, but then improves with treatment. Symptoms include sensitivity to light, feeling like there’s something in your eye, tearing, redness, and slightly decreased vision. It is treated with artificial tears, anti-inflammatory eye drops, cyclosporine, and soft contact lenses. Although vision may be mildly decreased during the active disease, the long-term visual prognosis is excellent.