Intraocular lens implant, comprising a first viewing element and a second viewing element, a spring element connected to the first viewing element and the second viewing element for varying a distance between the first and the second viewing element (12, 13) along an optical axis (A-A') of the lens implant for varying the focal length of the lens implant, wherein the lens implant is designed to take a shape suitable for distant vision when the spring element is in a relaxed state, wherein the lens implant is designed to take a shape suitable for near vision when the spring element is in a stretched state such that the distance between the first and the second viewing element (12, 13) in the stretched state of the spring element exceeds the distance between the first and the second viewing element (12, 13) in the relaxed state of the spring element, wherein the lens implant is designed to require an external stretch force for stretching the spring element from its relaxed state into its stretched state, wherein the external stretch force originates, in a deployed state of the lens implant in a lens capsule of an eye and upon contraction of a ciliary muscle, from the lens capsule acting on the spring element, wherein a spring constant of the spring element is dimensioned such that, in the deployed state and upon contraction of the ciliary muscle, the force produced by the lens capsule transforms the spring element from its relaxed state into the stretched state, which stretched state results in a shape of the lens implant representing a lens accommodated to near vision, wherein the spring constant of the spring element has a value of less than 550 mN/mm, wherein the lens implant lacks elements for directly or indirectly engaging, in the deployed state, with the contracting ciliary muscle of the eye, and wherein the lens implant is designed for solely being controlled by tension forces induced by the lens capsule via the viewing elements (12, 13). a first viewing element and a second viewing element, a spring element connected to the first viewing element and the second viewing element for varying a distance between the first and the second viewing element (12, 13) along an optical axis (A-A') of the lens implant for varying the focal length of the lens implant, wherein the lens implant is designed to take a shape suitable for distant vision when the spring element is in a relaxed state, wherein the lens implant is designed to take a shape suitable for near vision when the spring element is in a stretched state such that the distance between the first and the second viewing element (12, 13) in the stretched state of the spring element exceeds the distance between the first and the second viewing element (12, 13) in the relaxed state of the spring element, wherein the lens implant is designed to require an external stretch force for stretching the spring element from its relaxed state into its stretched state, wherein the external stretch force originates, in a deployed state of the lens implant in a lens capsule of an eye and upon contraction of a ciliary muscle, from the lens capsule acting on the spring element, wherein a spring constant of the spring element is dimensioned such that, in the deployed state and upon contraction of the ciliary muscle, the force produced by the lens capsule transforms the spring element from its relaxed state into the stretched state, which stretched state results in a shape of the lens implant representing a lens accommodated to near vision, wherein the spring constant of the spring element has a value of less than 550 mN/mm, wherein the lens implant lacks elements for directly or indirectly engaging, in the deployed state, with the contracting ciliary muscle of the eye, and wherein the lens implant is designed for solely being controlled by tension forces induced by the lens capsule via the viewing elements (12, 13).