Table 2. The regression equation between CS at various spatial frequencies and various HOAs.

Spatial frequency (c/d)	Regression equation	F	P
1.5	CS=1.7300-0.4828Z31+0.5097Z3−3 +0.5586 Z5−1	5.554	0.000
3	CS=1.0042-0.2133 Z31+0.3486 Z3−3	6.486	0.021
6	CS=1.7996-0.5962 Z31+0.2254 Z3−3+0.2988 Z5−1+0.0226 Z6−2	8.884	0.000
12	CS=1.2142-0.1022 Z3−3+0.4577 Z5−1	4.861	0.047
18	CS=1.6034-0.3442 Z3−3	5.487	0.039