Table 1

The maximum log contrast sensitivity score on each of the contrast sensitivity charts and the percentage of the 24 normal subjects, the 27 LASIK subjects, and a further nine LASIK subjects who were tested within the first week after surgery (LASIK 1st week) who achieved that score

	Vistech				FACT
	Maximum log CS	% Achieving top score			Maximum log CS	% Achieving top score
	Maximum log CS	Normal subjects	LASIK	LASIK 1st week	Maximum log CS	Normal subjects	LASIK	LASIK 1st week
1.5 cpd	2.23	0	0	0	2.00	19	50	33
3 cpd	2.34	4	0	0	2.20	26	33	44
6 cpd	2.41	4	13	0	2.26	11	13	33
12 cpd	2.23	0	4	0	2.08	4	13	0
18 cpd	1.95	0	0	0	1.81	11	0	11