11. From the age of three to seven, Piaf was allegedly blind as a result of keratitis . 12. Although the pathogenesis of microbial keratitis is not well understood, many different factors have been investigated. 13. Blindness results in approximately 35 percent to 40 percent of eyes affected with keratitis and corneal ulcer. 14. Keratitis caused by HSV is the most common cause of cornea-derived blindness in developed nations.15. Crownflower keratitis is a rare condition and is usually the result of accidental ocular exposure to the sap. 16. On rare occasions it has been found to cause fungal keratitis , lesions on nail and subcutaneous tissue. 17. It is an opportunist fungus and cause brain abscess, keratitis , native valve endocarditis to immunocompromised people. 18. However, if the infection is chronic, sclerosing keratitis can occur, making the affected area become opaque. 19. PHMB eye drops have been used as a treatment for eyes affected by " Acanthamoeba " keratitis . 20. Chynn EW, Talamo JH, Seligman MS . Acanthamoeba keratitis : is water exposure a true risk factor?
