In an eye of a patient, ciliary processes 21 project from a ciliary body 20 located in a circumferential direction about a visual axis C, toward the visual axis C. A hook portion 4 is provided which is formed so as to extend from base portions 21a of the ciliary processes 21 along the outer surfaces of the ciliary processes 21 via anterior end portions 21b of the ciliary processes 21 to base portions 21c at the opposite side. A leg portion 3 extending from the hook portion 4 toward the visual axis C is connected to the hook portion 4, and a lens 2 to be mounted in the eye of the patient is supported by the leg portion 3. The lens 2 is held in the eye of the patient in a state where the hook portion 4 is hooked or fitted to the ciliary processes 21. Accordingly, an intraocularly-mounted object and an intraocularly-mounted object holding member that are allowed to move directly in conjunction with relaxation/contraction movement of ciliary muscle, are provided.