Contact lens includes central optical zone for clearly focusing image of incident light onto retina clear central image region of users eyeball and peripheral optical zone surrounding central optical zone, and one or multiple moiré portions located on peripheral optical zone for focusing the image of incident light onto peripheral out-of focus region of retina of users eyeball. The moiré portions are processed by: using an aberrometer to measure aberration of retina of users eyeball and to further generate a three-dimensional image map, dividing the three-dimensional image map into clear central image region and peripheral out-of focus region, and then using an aberration correction software to calculate the power of sphere and the power and axis of cylinder on contact lens and then inputting the three-dimensional image map into processing machine for enabling the processing machine process the desired moiré portions on contact lens according to the three-dimensional image map.
