Unlock instant, AI-driven research and patent intelligence for your innovation.

Manufacturing method of multifocal intraocular lens

A kind of intraocular lens and multi-focal technology, applied in intraocular lens, prosthesis, medical science, etc., can solve problems such as the inability to determine the visual distance

Active Publication Date: 2017-10-03
EYEBRIGHT MEDICAL TECH BEIJING
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of the accuracy of measuring the structural and physiological parameters of the human eye by eye measuring instruments, and the continuous improvement of the formula for calculating the diopter of the intraocular lens, the doctor can accurately give the far focal power of the intraocular lens of the patient's operated eye, but cannot determine the visual distance Add power required for good vision at distance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method of multifocal intraocular lens
  • Manufacturing method of multifocal intraocular lens
  • Manufacturing method of multifocal intraocular lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The corneal diopter was 42.25D, the anterior chamber depth L2=3.16mm, and the axial length L2+L3 was 28.40mm. The refractive index of air is n1=1, the refractive index of aqueous humor is n2=1.336, and the refractive index of vitreous body is n3=1.336. At an viewing distance of 43 cm, the determined add power was +2.85D.

Embodiment 2

[0065] The corneal diopter was 42.25D, the anterior chamber depth L2=3.16mm, and the axial length L2+L3 was 23.10mm. The refractive index of air is n1=1, the refractive index of aqueous humor is n2=1.336, and the refractive index of vitreous body is n3=1.336. At an viewing distance of 43 cm, the determined add power was +2.85D.

Embodiment 3

[0067] The corneal diopter was 42.25D, the anterior chamber depth L2=3.16mm, and the axial length L2+L3 was 20.50mm. The refractive index of air is n1=1, the refractive index of aqueous humor is n2=1.336, and the refractive index of vitreous body is n3=1.336. At an viewing distance of 43 cm, the determined add power was +2.85D.

[0068] 1.2 Determination of anterior chamber depth and axial length, and manufacturing parameters of multifocal intraocular lenses under different corneal diopters

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a manufacturing method for a multi-focus artificial lens. The manufacturing method includes the steps that physiological parameters of an operative eye of a patient are determined; one or more sight distances of the operative eye are determined; one or more kinds of additive focal power of the multi-focus artificial lens used for the operative eye are determined according to the physiological parameters and the one or more sight distances of the operative eye; the multi-focus artificial lens with one or more kinds of additive focal power is manufactured so that the multi-focus artificial lens can provide one or more sight distances after being implanted into the operative eye.

Description

technical field [0001] The present invention relates to a manufacturing method of a multifocal intraocular lens, and more particularly relates to a manufacturing method of a multifocal intraocular lens capable of accurately realizing (one or more) personalized visual distances of a patient's operating eye. Background technique [0002] The eyes of normal people have the function of refracting and focusing infinite parallel rays on the retina through the refractive medium, so as to see distant objects clearly. Before presbyopia occurs, the eye adjusts to change the diopter of the lens to be able to see close objects and read. After cataract surgery, the adjustment device of the human eye has changed, and the adjustment function has disappeared accordingly. After the implantation of a monofocal intraocular lens, the ability to see far has been restored, but the ability to see near has not improved. Postoperative near vision must rely on the old The mirror can be restored. Th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/16
CPCA61F2/1618A61F2240/001A61F2250/0053
Inventor 不公告发明人
Owner EYEBRIGHT MEDICAL TECH BEIJING