Reproducibility of Scleral Spur Identification and Angle Measurements Using Fourier Domain Anterior Segment Optical Coherence Tomography

Table 5

Mean (± standard deviation) TISA750 (mm²) from each observer and differences.

	Observer AZC; (with adjudicator); (mm^2)	Observer SR; (session 1); (mm^2)	Difference; (with adjudicator); (mm^2)
All eyes
All quadrants	0.1757 ± 0.1855; (0.1710 ± 0.1824)	0.1722 ± 0.1774	0.0035 ± 0.0358; (−0.0012 ± 0.0426)
Nasal	0.1858 ± 0.1904; (0.1782 ± 0.1883)	0.1772 ± 0.1812	0.0087 ± 0.0374; (0.0010 ± 0.0301)
Temporal	0.1931 ± 0.2123; (0.1935 ± 0.2120)	0.1944 ± 0.2069	−0.0013 ± 0.0258; (−0.0009 ± 0.0198)
Superior	0.1519 ± 0.1612; (0.1409 ± 0.1439)	0.1550 ± 0.1676	−0.0031 ± 0.0282; (−0.0141 ± 0.0565)
Inferior	0.1722 ± 0.1811; (0.1714 ± 0.1837)	0.1622 ± 0.1559	0.0100 ± 0.0474; (0.0092 ± 0.0517)
Open-angle eyes
All quadrants	0.3467 ± 0.1875; (0.3364 ± 0.1899)	0.3370 ± 0.1775	0.0097 ± 0.0530; (−0.0006 ± 0.0666)
Nasal	0.3513 ± 0.2004; (0.3412 ± 0.2036)	0.3373 ± 0.1884	0.0140 ± 0.0594; (0.0039 ± 0.0473)
Temporal	0.3765 ± 0.2383; (0.3801 ± 0.2339)	0.3785 ± 0.2248	−0.0021 ± 0.0300; (0.0015 ± 0.0230)
Superior	0.3158 ± 0.1396; (0.2878 ± 0.1226)	0.3226 ± 0.1527	−0.0068 ± 0.0436; (−0.0348 ± 0.0879)
Inferior	0.3434 ± 0.1783; (0.3367 ± 0.1953)	0.3095 ± 0.1495	0.0339 ± 0.0674; (0.0272 ± 0.0796)
Nonopen-angle eyes
All quadrants	0.0678 ± 0.0783; (0.0752 ± 0.0694)	0.0681 ± 0.0590	−0.0004 ± 0.0174; (−0.0016 ± 0.0140)
Nasal	0.0813 ± 0.0818; (0.0826 ± 0.0754)	0.0760 ± 0.0717	0.0053 ± 0.0122; (−0.0008 ± 0.0115)
Temporal	0.0772 ± 0.0620; (0.756 ± 0.0599)	0.0781 ± 0.0597	−0.0009 ± 0.0237; (−0.0025 ± 0.0181)
Superior	0.0484 ± 0.0468; (0.0482 ± 0.0435)	0.0491 ± 0.0445	−0.0007 ± 0.0123; (−0.0009 ± 0.0112)
Inferior	0.0640 ± 0.0576; (0.0669 ± 0.0566)	0.0692 ± 0.0570	−0.0051 ± 0.0185; (−0.0022 ± 0.0151)