Intraocular lens

A technology of intraocular lens and lens, applied in intraocular lens, eye implant, medical science, etc., can solve problems such as less elasticity and cataract

Active Publication Date: 2008-05-21
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resulting change of elasticity is very small, and there is a risk of cataracts

Method used

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Embodiment Construction

[0031] In principle, the change in the refractive power or focal length of a lens can be expressed by a simple lens equation, determining the radius of curvature of the lens for its focal length (see, for example, the textbook by E. Hecht cited above):

[0032] 1 f = ( n - 1 ) · ( 1 R 1 - 1 R 2 ) - - - ( 2 )

[0033] R 1 - radius of curvature of the lens surface n - index of refraction

[0034]If a previously suitably prepared intraocular lens (IOL) according to the present invention is fitted into the eye capsule, then substantially such that the center of the lens is on...

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Abstract

The refractive power of the intraocular lens (10) can be varied by applying a voltage. The lens is designed to be able to be inserted into the capsular bag (12) of an eye. The intraocular lens is in the form of a liquid lens or a lens made of a liquid-like material.

Description

technical field [0001] The present invention relates to an intraocular lens adapted to fit into a human eye. Background technique [0002] Intraocular lenses are well known in ophthalmology; for example, intraocular lenses are implanted in cases of opacification of a previously clear eye lens (cataract). [0003] Age-related hyperopia (presbyopia) is a particular problem in ophthalmology, cf. eg the article "Intraokularlinsen" in DERAUGENSPIEGEL, 7-8 / 2002: 28-34. The age-related decrease in elasticity of the natural eye lens prevents the adaptation of its refractive power, thus preventing the eye from accommodating objects located in the immediate immediate immediate range, and from sharply imaging it or the retina. Although reduced accommodation can be corrected with magnifying glasses (presbyopic glasses), this comes with known expense and inconvenience. [0004] The prior art exhibits various attempts to address the problem of presbyopia. [0005] For example, attempts...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A61F2/16
CPCA61F2/1627A61F2/16A61F2210/0014A61F2/1635A61F2/1637A61F2250/0001
Inventor克里斯托弗·多尼斯基克劳斯·沃格勒
OwnerALCON INC