Table 3 Central corneal thickness (μm) in 2000 and 2005.

	Study eye				Fellow eye
	2000	2005	Change	%	2000	2005	Change	%
Patient 1	589.0	543.0	−46.0	−7.8	567.6	546.7	−20.9	−3.7
Patient 2	610.6	576.3	−34.3	−5.6	599.0	578.7	−20.3	−3.4
Patient 3	635.4	545.3	−90.1	−14.2	550.6	540.7	−9.9	−1.8
Patient 4	775.2	589.0	−186.2	−24.0	561.6	541.0	−20.6	−3.7
Mean	652.6	563.4	−89.1	−12.9	569.7	551.8	−17.9	−3.1
SD	83.9	22.8	69.0	8.3	20.8	18.2	5.4	0.9