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A technology of intraocular lenses and optics, applied in the direction of intraocular lenses, eye implants, etc., can solve problems such as eccentricity
Inactive Publication Date: 2011-04-27
麦迪康特医药有限责任公司
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This can cause eccentricity problems when changing tools
Method used
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Embodiment Construction
[0021] figure 1 A one-piece flexible intraocular lens 1 according to a first embodiment of the invention is shown. The lens 1 is intended to be implanted in a capsular bag (not shown) of the eye in a manner known per se.
[0022] The intraocular lens 1 has an optical part 2 and a haptic part 3 . For example, the intraocular lens 1 has a height H of approximately 9.74 mm, a width h of approximately 6.68 mm, and can be contained within a circle with a diameter D' approximately equal to 10.7 mm. Typically the size of the intraocular lens 1 is adapted to the size of the capsular bag.
[0023] The optic 2 is substantially circular and its diameter D is, for example, substantially equal to 6 mm.
[0024] The haptics 3 comprise two haptics 3a and 3b arranged symmetrically with respect to the center of the optic 2; , the intersection of Y' is arranged symmetrically. The two haptic components 3a and 3b are identical, so only haptic component 3a is described in detail below.
[00...
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Abstract
Intraocular lens (1, 101) with an optic part (2) and a haptic part (3, 103), characterized in that it comprises, at each transition between said optic part (2) and said haptic part (3, 103), two notches (7a, 8a, 14, 15, 122, 123), said two notches (7a, 8a, 14, 15, 122, 123) being arranged respectively on either side of said transition, each notch (7a, 8a, 14, 15, 122, 123) extending along the edge of said haptic part (3, 103) and impinging on the periphery of said optic part (2).
Description
technical field [0001] The subject of the invention is an intraocular lens. Background technique [0002] An intraocular lens consists of an optic forming the actual corrective optical system, and a haptic for fitting and securing the optic in place within the eye. [0003] Such lenses are usually made of a flexible material such that the lens can be bent or rolled so that it can be inserted into the eye through a small incision, with the lens returning to its normal shape and size when fitted in the eye. [0004] Intraocular lenses must cope with a certain amount of mechanical constraints. Specifically, the haptic of the lens must be flexible enough to properly tension the capsular sac, regardless of the size of the eye into which the lens fits. However, the haptic of the lens must be sufficiently rigid in the optical plane to allow effective correction. [0005] The shape of the intraocular lens must be adapted to limit cell migration leading to posterior capsule opacif...
Claims
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Application Information
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