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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: J AAPOS. 2014 Jun;18(3):251–254. doi: 10.1016/j.jaapos.2014.01.012

Table 2B. Prediction error and absolute prediction error.

Method Prediction error, D Absolute prediction error, D
+30 Da −4.0 ± 4.5 4.4 ± 4.1
Regression −1.0 ± 2.5 2.2 ± 1.6
SRK/T −2.0 ± 2.5 2.9 ± 1.7

D, diopter; SRK/T, Sanders-Retzlaff-Kraff theoretic.

a

In the absence of cooperative refraction, +32 D CL would have been prescribed; 2 D was deducted for near per IATS protocol, and thus for distance the prescription would be 30 D.