what is nodular episcleritis
Episcleritis is a relatively common, benign, self-limited inflammation of the episcleral tissues. There are two forms of this condition: nodular and simple. Nodular episcleritis is characterized by a discrete, elevated area of inflamed episcleral tissue. In simple episcleritis, vascular congestion is present in the absence of an obvious nodule. A 2013 study estimated incidence of episcleritis as 41.0 per 100,000 per year and prevalence at 52.6.