Optical Biometry Lens Constants — Alcon
SN6AD1 & SN6AD3 Aspheric ReStor (single piece) IOL
Holladay 1
1.79
Hoffer Q
5.58
SRK/T
119.0
Haigis*
a0 = -0.318 a1 = 0.145 a2 = 0.207
*Note: the a0 Haigis constant is a negative number.