CSA was effective in eliminating or reducing nummuli in the majority of patients. More than one-half of the responding eyes had a complete cure and did not experience recurrences after stopping therapy. We therefore consider topical CSA to be a safe and effective alternative to topical steroids for treating nummular infiltrates after AK.

The biomicroscopically changes of microsporidial keratoconjunctivitis are characteristical and lead to the clinical diagnosis. Fumagillin is in vitro and clinically a potent antimicrosporidian agent with an extremely broad therapeutic range.