摘要:
The invention relates to a method for automatic control of means for adjusting an apparatus for observing a subject in the sight of at least one person. It is characterized in that to command the displacement of the visual field (7) to a zone of the subject that the observer wishes to have appear as a zone of vision, relative to the reference system (R) associated with each optical system (4) at the time of its definition, the principle is altered in a variable manner as a function of the magnitude of the angle measured between the sight direction and the optical axis, which makes it possible to isolate in imaginary fashion, in the field of sight (14), at least one central field (15) having its axis approximately coincident with the optical axis (9) of the optical system (4) in question, in the form of a cone with its apex (S) substantially coincident with the center of the pupil of at least one eye of the observer and having its envelope at least partly contained in the visual field (7) and then to divide the field of sight (14) in imaginary fashion into approximately at least two coaxial volumes (16, 17, 18).
摘要:
The invention relates to a permanent interpositional ophthalmological implant between the sclera and the uveal tis-sue. The implant comprises a thin uvea-compatible body (50) having a thickness (e) which is at least less than IO times the smallest of the two other dimensions of the body, the body of the implant comprising two opposing edges separated from one another along one of the two dimensions perpendicular to the thickness, and one of the edges, known as the front edge (52), being curved in a concave manner away from body in a plane perpendicular to the thickness.
摘要:
The invention concerns a pre-descemetic sclero-keratectomy implant, designed for exerting a pressure on the pre-descemetic plane and on the stroma during a surgical treatment of glaucoma. The implant is made of crosslinked hyaluronic acid and has substantially the shape of a polyhedron with at least five faces, advantageously with five or six faces. In preferred embodiments, the implant has the shape of a prism, advantageously straight with a base shape as a triangle or parallelepiped, advantageously straight and preferably rectangular.
摘要:
The invention relates to a permanent interpositional ophthalmological implant between the sclera and the uveal tis-sue. The implant comprises a thin uvea-compatible body (50) having a thickness (e) which is at least less than IO times the smallest of the two other dimensions of the body, the body of the implant comprising two opposing edges separated from one another along one of the two dimensions perpendicular to the thickness, and one of the edges, known as the front edge (52), being curved in a concave manner away from body in a plane perpendicular to the thickness.
摘要:
The invention concerns an implant for deep sclerectomy for draining aqueous humor during surgical treatment of glaucoma. The implant is made of crosslinked hyaluronic acid and has substantially the shape of a polyhedron with at least five faces, advantageously the shape of a polyhedron with five or six faces. In a preferred embodiment, the implant has substantially the shape of a prism, advantageously straight with a trapezoidal base.
摘要:
The invention concerns an intraocular implant comprising a substantially circular optical part (10) and two curved haptic loops (12, 14) each with a first connecting end (12a, 14a) at the periphery of the optical part and a free second end (12b, 14b) intended to come to rest on the internal wall of the eye, characterized in that the optical part (10) and the haptic loops (12, 14) are made of the same flexible material, the elastic modulus thereof being in a range between 0.25 MPa and 1 MPa, and in that the width of each loop decreases from its connecting end to its free end such that the ratio between the bending moment variation and the inertia moment variation at two separate points (P1, P2) of the loop is substantially constant.