Grade I | Punctate epithelial erosions (PEEs) involving the inferior third of the cornea |
Grade II | PEEs involving more than the inferior thrd of the corneal surface |
Grade III | Macroepithelial defect (MED) |
Grade IV | Stromal whitening in the presence of epithelial defect (SWED) |
Grade V | Stromal scar |
Grade VI | Microbial keratitis |