Table 2.

Binary comparisons of spherical power, cylindrical power, and spherical equivalent measurements

p*	Spherical power	Cylindrical power	Spherical equivalent
Plusoptix-Retinomax	<0.001	<0.001	<0.001
HandyRef- Retinomax	0.004	<0.001	0.345
Table-top- Retinomax	<0.001	<0.001	<0.001
HandyRef- Plusoptix	<0.001	<0.001	<0.001
Table-top- Plusoptix	<0.001	0.036	<0.001
Table-top- HandyRef	<0.001	0.435	<0.001

^*Wilcoxon signed-rank test; HandyRef-K: Nidek Co. Ltd., Tokyo, Japan; Plusoptix A09: Plusoptix GmbH, Nuremberg, Germany; Retinomax K-plus 3: Right Mfg. Co. Ltd., Tokyo, Japan; Table-top autorefractometer: URK 800, Unicos Co. Ltd., Daejeon, Republic of Korea.