Posterior chamber type progressive multi-focus intraocular lens with lens eye

Abstract

The invention discloses a posterior chamber type progressive multi-focus intraocular lens with a lens eye, wherein theintraocular lens is made of a soft transparent hydrophilic or hydrophobic acrylic material, comprises an optical area, a support part at the edge of the optical area and a support loop, and is implanted behind an iris and in front of a natural lens (ciliary sulcus). The intraocular lens optical area has a far vision area and a near vision area at the same time, the diopter can be stably transited from the far vision area to the near vision area in a progressive mode, one of the front surface and the rear surface of the intraocular lens optical area is generally a spherical surface or an aspheric surface, and the other surface is a progressive free-form surface. After the intraocular lens is implanted, the eyesight of myopia and presbyopia of the middle-aged and elderly people can be corrected at the same time, and the middle-aged and elderly people having requirements for mobile phones, reading and entertainment can take off glasses truly.

Description

technical field [0001] The invention relates to the technical field of manufacturing phakic intraocular lenses, in particular to a design method for posterior chamber type phakic progressive multifocal intraocular lenses. Background technique [0002] People often think that people with myopia will not have presbyopia, which is wrong. Presbyopia will also occur in myopia, and the time of occurrence is no different from that of emmetropia. However, due to the refractive physiological characteristics of myopia, the symptoms will appear later. But as the degree of presbyopia continues to deepen, myopia also needs a pair of presbyopia glasses, that is to say, people with myopia need two pairs of glasses to see far and near, which is more troublesome than normal presbyopia. In order to realize that the human eye can see far and near clearly at the same time, bifocals, trifocals and progressive multifocal glasses have appeared successively, but there are many situations in life ...

AI Technical Summary

Problems solved by technology

But as the degree of presbyopia continues to deepen, myopia also needs a pair of presbyopia glasses, that is to say, people with myopia need two pairs of glasses to see far and near, which is more troublesome than normal presbyopia

In order to realize that the human eye can see far and near clearly at the same time, bifocals, trifocals and progressive multifocal glasses have appeared successively, but there are many situations in life where it is inconvenient to wear glasses or not recommended to wear glasses, such as in cold environments In the normal room, water mist will form on the surface of the glasses, and repeated removal and wearing of the glasses will deform the glasses and affect the wearing effect, etc.

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