The optical aberrations are mainly from two parts of the eye, cornea and lens.Both corneal and lenticular HOAs increase during the aging process, therefore affect the functional vision.

• 眼球光学路径中的高阶像差主要是由角膜及水晶体两个部份产生，随著老化过程角膜及水晶体的高阶像差都会逐渐增加，因而影响视觉品质。