Novel intraocular lens system

An intraocular lens and lens technology, applied in the direction of intraocular lens, eye implant, etc., can solve the problems of not considering the offset of imaging optical axis and adjustment structure, poor adjustment effect, severe degree of corneal astigmatism, etc.

Inactive Publication Date: 2019-04-12
易虹 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing intraocular lens implantation process does not consider the offset of the imaging optical axis and the adjustment structure, and does not consider the visual axis tilt of the human eye, pupil eccentricity and other factors, making the adjustment effect poor, and the surgical incision is large. Postoperative corneal astigmatism is more severe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1, see figure 1 , the present invention provides a technical solution: a novel intraocular lens system, comprising a rear group lens 4 and a front group lens 5, the rear group lens 4 and the front group lens 5 are all located in the posterior chamber structure 7 of the eyeball 1, the The rear group of lenses 4 includes at least one first lens, and the rear group of lenses 4 is close to the front of the posterior capsule 6 inside the eyeball 1, and the front group of lenses 5 also includes at least one second lens, and the front group of lenses 5 also includes at least one second lens. The lens 5 is arranged between the posterior capsule 6 and the iris 8 of the eyeball 1, the front group lens 5 and the rear group lens 4 form a rotationally symmetrical imaging system around the optical axis 3 of the eyeball 1, and the front group lens 5 and the The combined optical properties of the rear group lens 4 can provide a suitable magnification, and the relationship betwe...

Embodiment 2

[0032] Example 2, see figure 2 , the present invention provides a technical solution: a novel intraocular lens system, comprising a rear group lens 4 and a front group lens 5, the rear group lens 4 includes at least one first lens, and the rear group lens 4 is close to The front of the posterior capsule 6 inside the eyeball 1, the front group lens 5 also includes at least one second lens, and the front group lens 5 is arranged between the iris 8 of the eyeball 1 and the cornea 9 of the eyeball 1, the The front group lens 5 and the rear group lens 4 form a rotationally symmetrical imaging system around the optical axis 3 of the eyeball 1. This imaging system can provide a corresponding magnification according to different patients, and is suitable for patients with macular deformation or other eye diseases. The low-density light-sensitive fundus, the additional preferred structure has better aberration tolerance, and the accuracy of the implantation position is lower.

[0033...

Embodiment 3

[0040] Example 3, see image 3 , and the difference from Embodiment 1 is that the front group lens 5 of the cornea 9 and the intraocular lens system are formed through the intentional decentering (the optical element is on a plane perpendicular to the optical axis and deviates from the coaxial position) the front group lens 5 The anterior segment imaging system constituted together with the rear lens group 4 will transmit the clearest image to the paracentral area 11 deviated from the fovea area 10 of the macula;

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Abstract

The present invention discloses a novel intraocular lens system. The system includes a rear set of lens and a front set of lens, the rear set of lens includes at least one first lens and the rear setof lens abuts the front side of the posterior capsule inside the eyeball, the front set of lens also includes at least one second lens and the front set of lens is disposed on the side of the iris inside the eyeball, the front set of lens and the rear set of lens form a rotational symmetric imaging system around the optical axis of the eyeball, the first lens is specifically a positive-dioptric single-positive lens with a front light-transmission surface and a rear light-transmission surface, at least one of the front light-transmission surface and the rear light-transmission surface is an aspheric surface, and the second lens is specifically a negative-dioptric single-positive lens with a front light-transmission surface and a rear light-transmission surface. Through the positions of therear set of lens and the front set of lens, the dynamic adjustment of the clear region of the ophthalmic anterior segment imaging is achieved. The system is adapted to the fundus retinal condition ofmacular degeneration patients, and projects high-resolution images to the area with the lowest retinal photoreceptor cell damage.

Description

technical field [0001] The invention relates to the technical field of intraocular lens systems, in particular to a novel intraocular lens system. Background technique [0002] Age-related macular degeneration (AMD) is recognized by the international ophthalmology community as one of the most difficult eye diseases to treat, and it is also one of the main causes of blindness in patients. The incidence of age-related macular degeneration (AMD) in China is increasing day by day, and the total patient population has reached 5 million, patients with advanced macular geographic atrophy accounted for 50% (2.5 million people), and it is on the rise. Age-related macular degeneration causes a severe loss of photoreceptor cells in the macular area of ​​the retina, usually involving the fovea. Vision in these areas is critical for reading and recognizing faces in everyday life. [0003] Most patients with macular degeneration lose most of the photoreceptor cells in the central area o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16
CPCA61F2/1613A61F2/1635
Inventor 易虹殷蔚
Owner 易虹
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