Enhanced Multifocal Intraocular Lens for Improved Optical Performance

The present invention relates to an enhanced multifocal intraocular lens (IOL) that addresses the limitations of existing IOLs by providing improved optical performance, reduced aberrations, and enhanced image quality.

Existing multifocal IOLs often exhibit limitations such as aberrations, reduced visual acuity, and dependence on glasses after implantation. The original patent disclosed a method for determining cross sections of a first diffractive profile for an IOL, but it did not address the issues of aberrations and optical performance. The present invention solves these problems by introducing novel design elements and optimization methods.

The enhanced multifocal IOL features a diffractive profile with variable thickness and constant curvature, ensuring improved optical performance and reduced aberrations. The invention also includes a method for optimizing the sphericity between diffractive steps, resulting in enhanced image quality. Additionally, the IOL can comprise a spherical surface and an aspherical surface, with the aspherical surface designed to reduce spherical aberrations. A system for designing the multifocal IOL is also disclosed, comprising a computer-aided design module and an optimization module.

The novelty of the present invention lies in the introduction of variable thickness and constant curvature in the diffractive profile, the optimization method for sphericity between diffractive steps, and the use of aspherical surfaces to reduce aberrations. These features are not disclosed in the original patent and provide a significant improvement over existing multifocal IOLs.

Alternative embodiments of the inventive concept may include varying the number of active diffractive orders along the optical axis, using different materials or manufacturing techniques, or incorporating additional features such as wavefront sensing or adaptive optics.

The enhanced multifocal IOL has significant commercial potential in the ophthalmic industry, particularly in the treatment of cataracts and myopia. The invention can be marketed as a premium product offering improved visual outcomes and reduced dependence on glasses, appealing to patients and surgeons seeking advanced IOL technology.