Table 1. Parameters and scoring of the WBCS^*.

Parameters	Scoring
Vascularity	3 = avascular
The parameters were scored from 0 to 3 according to the number of blood vessels in the filtering bleb.	2 = similar to adjacent conjunctiva
	1 = increased
Conjunctival vessels outside the bleb area were used as the reference criterion.	0 = massive
Corkscrew vessels	3 = none
The bleb was divided into three regions, and the parameters were scored from 0 to 3 on the basis of the extent of corkscrew vessel involvement in bleb.	2 = in one third
	1 = in two thirds
	0 = entire bleb
Encapsulation	3 = none
The bleb was divided into three regions, and the parameters were scored from 0 to 3 on the basis of the extent of bleb encapsulation.	2 = in one third
	1 = in two thirds
	0 = entire bleb
Microcysts	3 = entire bleb
The bleb was divided into three regions according to their relationship with the scleral flap, and the parameters were scored from 0 to 3 according to the bleb area that contained microcysts.	2 = lateral or medial of the flap
	1 = over the scleral flap
	0 = none
Bleb height: multiples of corneal thickness
Observations were performed using a slit-lamp under high magnification. The bleb height was based on the highest point from the scleral surface to the bleb and the relationship between bleb height and corneal thickness (how many fold higher the bleb height was compared to the corneal thickness) was calculated.

* Table from: Klink T, Schrey S, Elsesser U, Klink J, Schlunck G, Grehn F. [31] Interobserver variability of the Wurzburg bleb classification score. Ophthalmologica. 2008; 222: 408–413.