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. Author manuscript; available in PMC: 2009 Feb 1.
Published in final edited form as: Am J Ophthalmol. 2007 Nov 28;145(2):381–385. doi: 10.1016/j.ajo.2007.09.012

Figure 1.

Figure 1

Test-retest variability of simultaneous prism and cover test at distance fixation. Bland-Altman plot, showing 95% limits of agreement half-widths (± 1.96 × standard deviation of the difference) to be ± 6.3 pd. Dotted line represents the mean of test-retest differences; 0.8 pd ± 3.2 pd. There appears to be no relationship between magnitude of deviation and test-retest variability. pd = prism diopters