Table 2. Breakdown of reasons for non-usage of retrieved eyes in the North East England in 2006 and 2010.

Reasons for unused eyes	2006	2010	P-value
	n=92, (%)	n=312, (%)
Failed serology	22 (24)	14 (5)	<0.001
Contamination in eye bank	4 (4)	18 (6)	0.80
Other medical contraindication	4 (4)	14 (5)	>0.99
Tissue quality (endothelial deficiency or corneal opacity)	5 (5)	23 (7)	0.64
Recipient factors (unfit, unavailable, no longer needing transplant)	1 (1)	11 (4)	0.31
Others	4 (4)	12 (4)	0.77
Total	40 (44)	92 (30)	0.01

P-values that are statistically significant are underlined.

n, number of total donated eyes for corneal transplantation.