Department of Ophthalmology;
Faculty of Medicine;
PublicHealth and Nursing;
Universitas Gadjah Mada/Dr;
Sardjito General Hospital;
Yogyakarta 55284;
Indonesia;
Departement of Biomolecular and Cell Biology;
Faculty of Medicine;
Public Health and Nursing;
Universitas Gadjah Mada;
Yogyakarta 55284;
Indonesia;
corneal ulcers; bacterial keratitis; collagen cross-linking; INTERLEUKIN-6;