Monofocal intraocular lens whole-course vision planning method

Abstract

The invention discloses a monofocal intraocular lens whole-course vision planning method. The method comprises the following steps: 1) collecting data of total corneal refractive power of a pupil area; 2) analyzing pupil region full-corneal diopter distribution to obtain a K minimum value and a K maximum value, the K minimum value having optical energy distribution; 3) screening out the K maximumvalue and the K minimum value greater than or equal to 1.6 D in the step 2; and 4) performing whole-course vision planning of the monofocal intraocular lens according to the full-corneal diopter screened in the step 3. The method has the beneficial effects that suitable crowds of monofocal intraocular lenses can be screened out easily; the success rate of the whole-course vision can be improved, namely, the lens removal rate after the artificial lens operation is improved; the method is not limited by artificial lens types; the depth of field is fully utilized and is completely personalized.

Description

technical field [0001] The invention relates to the technical field of intraocular lenses, in particular to a method for planning full-range vision of single-focus intraocular lenses. Background technique [0002] The structure of the human eye is equivalent to that of a camera. The combined lens formed by the cornea and the crystalline lens is equivalent to the lens, and the crystalline lens is equivalent to the focusing lens, and its thickness is changed by the scaling of the ciliary muscle, that is, the refractive power. Refractive power can adjust the focal length of far and near, so that we can see things clearly. The pupil is equivalent to the aperture of a camera, which automatically shrinks or expands with the intensity of the light, and it can adjust the brightness of the light entering the eye. The retina is equivalent to the negative film of a camera, and the retina forms images by receiving light stimulation. [0003] We refer to the range of object space that...

AI Technical Summary

Problems solved by technology

Through the follow-up, testing and research on patients who lost their lenses after surgery for more than three months, it was found that monofocal intraocular lenses also have a larger depth of field, but they have not been well utilized. At the same time, it was also found that some monofocal intraocular lens implantation Finally, he has enough depth of field for full-range vision, but the position of use is offset, and it is possible to achieve full-range vision through correction

Therefore, a patent was applied for "A Screening Method for Single-focal Intraocular Lens and the Obtained Intraocular Lens", and a group of patients were selected for a single-focus intraocular lens, and a return visit was conducted for more than three months, and the defocus curve was measured to obtain its deviation value. During the credible period, correcting the a constant and reserving the diopter, performing surgery according to the new data, can make most of them obtain full-range vision, but the disadvantage is that only a single lens can be corrected, and some corrections will still have deviations; non-personal The whole operation process takes a long time; it is not possible to distinguish whether to choose a monofocal or a multifocal intraocular lens at an early stage

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