Abstract: An insertion system for an intraocular lens having a deformable optical portion and loop-shaped support portions for supporting the optical portion within an eye includes a holding member for holding the intraocular lens at a standby position in a state in which no stress acts on the optical portion of the lens; a deforming member for deforming the lens to a reduced size; an insertion tube through which the deformed lens is inserted into the eye; a pusher mechanism having a push rod for pushing and inserting the lens into the eye; and a lens moving mechanism for moving the lens from the standby position to an insertion position at which the pusher mechanism can push and insert the lens into the eye. When the lens is moved to the insertion position, the optical portion and the support portions of the lens are placed in different spaces in order to fix the positional relationship between the optical portion and the support portions of the lens.