A diffractive ocular implant with correct distance vision, i.e., a vision such that the modulation transfer function of said implant is greater than 20% at 50 cycles/mm on a 3mm pupil, and enlarged near vision (I1, I2), i.e., with an absence of discontinuity of its phase transfer curve as a function of the viewing distance (abbreviated PTF-TF), characterized by the fact that: - it has a phase transfer curve as a function of the viewing distance (PTF-TF) with an absence of discontinuity over a depth of field of at least 1.3D in the corneal plane, i.e., over an area of additions in the corneal plane of at least 1.3D, the addition in the corneal plane being understood as the inverse of the distance between the object viewed and the cornea, advantageously greater than 1.45D, which absence of discontinuity is located between intermediate vision and near vision, i.e. between 0.5D and 4D for spatial frequencies from 0 to 100 cycles/mm for a pupil of at least 3 mm in diameter, - it comprises a body with at least one optical surface having an optical axis and a plurality of diffractive zones arranged concentrically around said optical axis, these concentric zones each having at least one radius r and being distributed between a central region and a peripheral region, at least one central region or peripheral region of said diffractive zones having a profile of N successive echelettes, the successive r N of which, as one moves away from said optical axis, respond to the relation: r N = 2 N λ f p + 2. λ. F 2 N. Δ f relation wherein: N is an integer greater than or equal to 1 and taking successive integer values up to N max, wherein N max is at least 4; λ is the conception wavelength; f p is the focal length corresponding to the addition for near vision; Δ f is the focal length variation;, which is not zero, positive or negative, and whose absolute value is less than 10,000; F2 is either a polynomial of the variable N of order between 3 and 5, which is expressed as follows: F 2 N = cte + a. N + b. N 2 + c. N 3 + d. N 4 + ⋯, - and that the maximum height h of said successive echelettes (diffractive steps) being given by the relation: h = α λ Δ n relation wherein: - Δn is the refractive index variation, i.e., the difference between the refractive index of the implant material and that of the aqueous humor of the eye or the surrounding environment; - α is the height factor of the echelette, comprised between 0.25 and 1.75. - it has a phase transfer curve as a function of the viewing distance (PTF-TF) with an absence of discontinuity over a depth of field of at least 1.3D in the corneal plane, i.e., over an area of additions in the corneal plane of at least 1.3D, the addition in the corneal plane being understood as the inverse of the distance between the object viewed and the cornea, advantageously greater than 1.45D, which absence of discontinuity is located between intermediate vision and near vision, i.e. between 0.5D and 4D for spatial frequencies from 0 to 100 cycles/mm for a pupil of at least 3 mm in diameter, - it comprises a body with at least one optical surface having an optical axis and a plurality of diffractive zones arranged concentrically around said optical axis, these concentric zones each having at least one radius r and being distributed between a central region and a peripheral region, at least one central region or peripheral region of said diffractive zones having a profile of N successive echelettes, the successive r N of which, as one moves away from said optical axis, respond to the relation: r N = 2 N λ f p + 2. λ. F 2 N. Δ f relation wherein: N is an integer greater than or equal to 1 and taking successive integer values up to N max, wherein N max is at least 4; λ is the conception wavelength; f p is the focal length corresponding to the addition for near vision; Δ f is the focal length variation;, which is not zero, positive or negative, and whose absolute value is less than 10,000; F2 is either a polynomial of the variable N of order between 3 and 5, which is expressed as follows: F 2 N = cte + a. N + b. N 2 + c. N 3 + d. N 4 + ⋯, N is an integer greater than or equal to 1 and taking successive integer values up to N max, wherein N max is at least 4; λ is the conception wavelength; f p is the focal length corresponding to the addition for near vision; Δ f is the focal length variation;, which is not zero, positive or negative, and whose absolute value is less than 10,000; F2 is either a polynomial of the variable N of order between 3 and 5, which is expressed as follows: F 2 N = cte + a. N + b. N 2 + c. N 3 + d. N 4 + ⋯, - and that the maximum height h of said successive echelettes (diffractive steps) being given by the relation: h = α λ Δ n relation wherein: - Δn is the refractive index variation, i.e., the difference between the refractive index of the implant material and that of the aqueous humor of the eye or the surrounding environment; - α is the height factor of the echelette, comprised between 0.25 and 1.75. - Δn is the refractive index variation, i.e., the difference between the refractive index of the implant material and that of the aqueous humor of the eye or the surrounding environment; - α is the height factor of the echelette, comprised between 0.25 and 1.75.