Table 1. Proforma of histological features used in the study.

Epithelium

Oedema

Atrophy

Hyperplasia

Bullous lifting

Subepithelial basement membrane

Conjunctivilsation

Pannus

Ulcer

Basal vacuole damage

Bowman's

Effaced

Breaks

Stroma

Scarring

Inflammation: acute; chronic; acute and chronic

Deposits (qualify)

Vascularisation

Implants

Thinning

Keratocyte cell loss

Infective agent: bacteria; fungi; protozoa; other (qualify)

Ulcer

Non-melt perforation

Melt

Host–donor interface

Band keratopathy

Spheroidal droplet keratopathy

Lipid keratopathy

Descemet's

Normal

Thin

Thickened

Ruptured

Reduplication

Guttae

Folds

Endothelium

Normal

Loss

Multilayered

Contain pigment

Deposits

Retrocornea

Inflammation

Fibrosis

Attached iris

Attached lens

Epithelial ingrowth