配戴框架眼镜时一般都要测量顾客的瞳距(平光除外),且瞳距又分远瞳距和近瞳距。然而,配戴隐形眼镜一般不测量隐形眼镜配戴者的瞳距。隐形眼镜通常是直接覆盖在配戴者的眼角膜表面。隐形眼镜片随着配戴者双眼眼球的移动而移动,眼球移动过程软性隐形眼镜片通常会产生与眼球瞬间的不同步,由此造成镜片光心和瞳孔有些偏离,但也是瞬间的,镜片很快就会回位,眼球上下左右移 When wearing glasses generally measure the customer’s IPD (except plain light), and the IPD is far from IPD and near IPD. However, wearing contact lenses generally does not measure contact lens wearers IPD. Contact lenses usually cover the wearer’s corneal surface directly. Contact lenses move with the movement of the eyes of the wearer’s eyes, the process of moving the eye soft contact lenses usually produce eye contact with the instant, resulting in some deviation from the optical center of the lens and the pupil, but also the moment, the lens Will be back soon, the eye moves up and down