Table 1.

Mean and standard deviation of sphere, cylinder and spherical equivalent (SE) obtained using different refraction techniques. (n = 83 eyes).

Variables	Mean ± SD (95% CI)				Friedman Test [Pairwise Comparisons]
	Subjective Refraction (1)	Dry Autorefraction (2)	Cycloplegic Autorefraction (3)	Wavefront-based Refraction (4)
Sphere (D)	−3.22 ± 1.59 (−3.56 to −2.87)	−3.39 ± 1.62 (−3.74 to −3.03)	−3.09 ± 1.63 (−3.45 to −2.73)	−3.11 ± 1.69 (−3.48 to −2.74)	(X2(3) = 91.299, p < 0.001) [1,4: 0.145, 3,4: 0.667, Other pairs: <0.05]
Cylinder (D)	−0.63 ± 0.72 (−0.79 to −0.47)	−0.73 ± 0.71 (−0.89 to −0.58)	−0.70 ± 0.70 (−0.85 to −0.55)	−0.76 ± 0.71 (−0.92 to −0.60)	(X2(3) = 48.412, p < 0.001) [2,3: 0.457, 2,4: 0.708, Other pairs: <0.05]
SE (D)	−3.53 ± 1.53 (−3.87 to −3.20)	−3.76 ± 1.55 (−4.10 to −3.42)	−3.44 ± 1.57 (−3.78 to −3.10)	−3.49 ± 1.61 (−3.85 to −3.14)	(X2(3) = 89.933, p < 0.001) [1,4: 1.00, Other pairs: <0.05]