Breadcrumb Home Insights Publications article The incidence of ulcerative keratitis among users of daily-wear and extended-wear soft contact lenses EC Poggio, RJ Glynn, OD Schein, JM Seddon, MJ Shannon, VA Scardino, and KR Kenyon. Article September 1, 1989 The New England Journal of Medicine — Volume 321:779-783, September 21, 1989, Number 12.