Table 1.

Repeatability values with 2.5% and 97.5% limits of the reference intervals of the different ETDRS sections. Repeatability is defined as half the length of the reference interval.

	ZEISS Cirrus			Heidelberg Spectralis
	Repeatability	2.5%	97.5%	Repeatability	2.5%	97.5%
Subfoveal	±57	−59	55	±44	−43	45
Central 1 mm	±43	−42	44	±34	−34	34
Inferior 3 mm	±35	−36	34	±28	−29	27
Superior 3 mm	±42	−43	42	±34	−36	33
Nasal 3 mm	±27	−26	27	±22	−22	23
Temporal 3 mm	±31	−33	29	±24	−23	25
Inferior 6 mm	±27	−28	27	±50	−77	22
Superior 6 mm	±34	−32	35	±50	−64	35
Nasal 6 mm	±19	−19	18	±21	−22	20
Temporal 6 mm	±23	−23	24	±23	−23	23