An intraocular lens (IOL) insertion apparatus may include a hand piece body having a distal tip, an IOL folding chamber, and IOL a dwell position, and a telescoping plunger having a first plunger portion and a second plunger portion. The first plunger portion and second plunger portion may be arranged to simultaneously advance through a first portion of a displacement of the telescoping plunger, and one of the first and second plunger portions may be arranged to advance through a second portion of the displacement of the telescoping plunger.人工水晶體(IOL)插入設備可以包括具有遠側尖端的手持件本體、IOL折疊腔室和IOL停滯位置、以及具有第一柱塞部分和第二柱塞部分的伸縮柱塞。該第一柱塞部分和第二柱塞部分可以安排成同時推進通過伸縮柱塞的位移的第一部分，並且該第一柱塞部分和第二柱塞部分中的一者可以安排成推進通過伸縮柱塞的位移的第二部分。
