Table 1 Scoring parameters for each of the three outcome variables
Outcome variablesScoring parameters
Subconjunctival haemorrhageGrade 0: None
Grade 1: ⩽25% of the size of the graft
Grade 2: ⩽50% of the size of the graft
Grade 3: ⩽75% of the size of the graft
Grade 4: Haemorrhage involving the entire graft (no subconjunctival vessels visible)
InflammationGrade 0: No dilated corkscrew vessel in the graft
Grade 1: 1 bright red, dilated corkscrew vessel crossing the graft-bed margin
Grade 2: 2 bright red, dilated corkscrew vessels crossing the graft-bed margin
Grade 3: three bright red, dilated corkscrew vessels crossing the graft-bed margin
Grade 4: ⩾3 bright red, dilated corkscrew vessels crossing the graft-bed margin
Graft stabilityGrade 0: All four sides of the graft margin are well apposed
Grade 1: Gaping/displacement of one side of the graft-bed junction
Grade 2: Gaping/displacement of two sides of the graft-bed junction
Grade 3: Gaping/displacement of three sides of the graft-bed junction
Grade 4: Graft completely displaced from the bed