An apparatus for inserting a lens into an eye includes a handle portion having a proximal end and a distal end, an inserter head assembly slidably coupled to the distal end of the handle portion, a plunger sleeve securely coupled to the handle portion, an actuation sleeve securely coupled to the inserter head assembly, and a plunger coupled to the plunger sleeve and slidably received through the inserter head assembly, wherein the plunger includes a mounting post at a distal end for mounting the lens and a proximal or a distal movement of the actuation sleeve axially extends or retracts the inserter head assembly relative to the plunger. In accordance with other aspects of the present disclosure, an inserter head assembly for a lens insertion apparatus includes a mounting cap and a plunger having a mounting post configured for securing a lens thereon.