Table 2.

Bland-Altman Plot lower and upper Limits of Agreement between Observers using by Topcon TRK-2P and between Devices

Comparison	Difference	Limits of agreement
	Mean ± SD	Lower	Upper
Observer 1 vs. Observer 2 (Topcon TRK-2P)	0.87 ± 5.31 µm	-9.54	11.28
Topcon TRK-2P vs. Lenstar 900	14.96 ± 4.01µm	7.10	22.82

SD: Standard Deviation; µm: micrometer; vs: versus.