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CN-122028872-A - Enhanced single Jiao Dianguang adjustable intraocular lens

CN122028872ACN 122028872 ACN122028872 ACN 122028872ACN-122028872-A

Abstract

In some embodiments of an enhanced single focus intraocular lens (EMF IOL), the power of the EMF IOL is characterized by a base power for distance vision that is consistent with the single focus lens, and an add power structure for near vision that includes a central power ring around the IOL's optical axis, and an axial power aperture at the IOL's optical axis. In an embodiment, the power increasing structure is introduced by an approximately super gaussian optical path difference, the super gaussian having a power of more than two of the radial coordinates in its index. In some EMF IOLs, the optical path difference of the EMF IOL is characterized by a base wavefront for distance vision and an additional power structure wavefront for near vision, the additional power structure wavefront being approximately characterized by an ultra-high-power having in its index a power of more than two of the radial coordinates r.

Inventors

  • J. Condos
  • I. Goldschlig

Assignees

  • RX视觉股份有限公司

Dates

Publication Date
20260512
Application Date
20241030
Priority Date
20231031

Claims (20)

  1. 1. An enhanced single focus (EMF) intraocular lens (IOL), wherein: the power of the intraocular lens is characterized by: Basic optical power for distance vision, consistent with a monofocal lens, and An add power structure for near vision comprising: A central power ring surrounding the optical axis of the IOL, and An axial power aperture located at the optical axis of the IOL.
  2. 2. The enhanced monofocal IOL of claim 1, wherein: The base optical power is characterized by one of: Radius independent single focal power, and Having a radius-dependent optical power of a corrective aberration that at least partially compensates for the corneal aberration.
  3. 3. The enhanced monofocal IOL of claim 1, wherein: The optical power is a non-monotonic function of the radius of the IOL such that the optical power has: A minimum value in the axial power aperture, and A maximum in the central power ring.
  4. 4. The enhanced monofocal IOL of claim 1, wherein: The central power ring produces a power configuration having a maximum in the range of 1.0-4.0 diopters.
  5. 5. The enhanced monofocal IOL of claim 1, wherein: The central power ring produces a power configuration having a maximum in the range of 2.0-3.0 diopters.
  6. 6. The enhanced monofocal IOL of claim 1, wherein: the power-increasing structure is introduced by an approximately super-gaussian optical path difference, the super-gaussian having in its index a power of radial coordinates greater than two.
  7. 7. The enhanced monofocal IOL of claim 1, wherein: The axial power aperture produces a paraxial power addition configuration of less than 1 diopter.
  8. 8. The enhanced monofocal IOL of claim 1, wherein: The axial power aperture produces a paraxial power addition configuration of less than 0.5 diopters.
  9. 9. The enhanced monofocal IOL of claim 1, wherein: The maximum value of the power structure produced by the central power ring is located at a radius of no more than 0.5 mm.
  10. 10. The enhanced monofocal IOL of claim 1, wherein: The power increasing structure extends the depth of focus of the EMF IOL relative to the depth of focus of an IOL having only the same base power.
  11. 11. The enhanced monofocal IOL of claim 10, wherein: The negative logMAR of the EMF IOL having the base power plus the power increasing structure exceeds 0.2 over a longer defocus diopter range than an IOL having only the same base power.
  12. 12. The enhanced monofocal IOL of claim 1, wherein: the modulation transfer function of the EMF IOL at zero defocus is within 30% of the modulation transfer function of a corresponding monofocal IOL having only the same base power.
  13. 13. The enhanced monofocal IOL of claim 1, wherein: The root mean square difference between the wavefront introduced into the power increasing structure and the best fit sum of the zernike polynomials truncated at n=8 exceeds 0.2 in units of wavelength of 550 nm.
  14. 14. The enhanced monofocal IOL of claim 1, wherein: the power increasing structure is non-negative across all radii.
  15. 15. The enhanced monofocal IOL of claim 1, wherein: The IOL is optically tunable, and The power increasing structure is pre-molded or formed by a light conditioning process.
  16. 16. An enhanced single focus intraocular lens, wherein: The optical path difference W (r) of the enhanced single focus intraocular lens (EMF IOL) is characterized by: Basic wavefront W b (r) for distance vision, and An add power structural wavefront W a (r) for near vision, the add power structural wavefront W a (r) being approximately characterized by a super gaussian W sG (r) having in its index a power of radial coordinates r greater than two.
  17. 17. The enhanced monofocal IOL of claim 16, wherein: The power increasing structural wavefront W a (r) is approximately characterized by the hypers W sG (r) in the sense that a best approximation hypers can be found, the root mean square difference D (a, sG) between the best approximation hypers wavefront and the power increasing structural wavefront W a (r) being less than δ=0.1 in λ=550 nm wavelengths for D (a, sG)/λ < δ.
  18. 18. The enhanced monofocal IOL of claim 16, wherein: the power of the radius in the ultra-high exponent is between 3.5 and 4.5.
  19. 19. The enhanced monofocal IOL of claim 16, wherein: The add power structure wavefront incorporates an additional add power structure for near vision comprising: A central power ring surrounding the optical axis of the IOL, and An axial power aperture located at the optical axis of the IOL.
  20. 20. The enhanced monofocal IOL of claim 19, wherein: The central power ring produces a power configuration having a maximum in the range of 1.0-4.0 diopters.

Description

Enhanced single Jiao Dianguang adjustable intraocular lens John Kondis and Ilya Goldshleger Cross Reference to Related Applications The present application claims priority from U.S. application Ser. No. 18/498,086, entitled "Enhanced Monofocal Light Adjustable Intraocular Lens", filed on 10/31 at 2023, the entire contents of which are incorporated herein by reference. Technical Field The present application relates to monofocal intraocular lenses, and more particularly to optically tunable enhanced monofocal intraocular lenses. Background Replacement of the cataractous natural lens of an eye with an artificial lens (IOL) is a life-altering experience for the patient because these IOLs restore the patient's visual acuity to the quality enjoyed early in their life. However, these IOLs are non-accommodating and thus provide good vision to the patient at both long and short distances remains a challenge. Various solutions have been proposed to provide good vision at different distances, such as multifocal IOLs and extended depth of focus IOLs. Some of these ideas are implemented by diffractive optical design, others by zonal or refractive design. However, no single optical design is clearly superior to all other designs, and there is a continuing need to develop additional intraocular lenses that can further enhance the patient's visual acuity at different distances. Disclosure of Invention In some embodiments of an enhanced single focus (EMF) intraocular lens (IOL), the power of the EMF IOL (optical power) is characterized by a base power for distance vision that is consistent with the single focus lens, and an add-power structure for near vision that includes a central power ring around the IOL's optical axis, and an axial power hole (axial power hole) at the IOL's optical axis. In an embodiment, the power increasing structure is introduced by an approximately super gaussian optical path difference, the super gaussian having a power of more than two of the radial coordinates in its index. In some embodiments of an Enhanced Monofocal (EMF) intraocular lens (IOL), the optical path difference W (r) of the EMF IOL is characterized by a base wavefront W b (r) for distance vision and an additional power-increasing structural wavefront W a (r) for near vision, which is approximately characterized by a super Gaussian W sG (r) having a power in its exponent of the radial coordinate r greater than twice. Drawings Figures 1A-H illustrate the optical beam, logMAR and MTF characteristics of prior IOLs. Figures 2A-B illustrate an embodiment of an enhanced single focus (EMF) IOL 100. Figure 3 illustrates an ultra-gaussian embodiment of an EMF IOL 100 having zero additional paraxial power configuration. Figure 4 illustrates a modified ultra-gaussian embodiment of an EMF IOL 100 having a non-zero additional paraxial power configuration. Fig. 5 illustrates the root mean square difference between two wavefronts. FIG. 6 shows a contrast plot of defocus dependent (defocus-dependent) logMARs for different IOLs. Figure 7 shows a comparison graph of the defocus-dependent MTFs of different IOLs. Detailed Description The following will describe a new intraocular lens design that addresses the above challenges and provides significantly improved optical performance for the benefit of the patient. Figures 1A-B illustrate the beam shape of a prior art multifocal intraocular lens 10 for both far and near objects, having a central near addition region 12 for near vision and a remaining peripheral region 14 for far vision. Both of these regions have a narrow beam waist and therefore a well-defined optical power to image near and far objects onto the retina 16 with high quality, respectively. Figures 1C-D illustrate two ways of characterizing the imaging quality of IOL 10. Fig. 1C shows visual acuity in terms of a "logMAR" graph representing the "logarithm of the minimum resolution angle". The angular units are arc minutes and the logarithms are base 10. These figures are typically determined by vision testing the patient in a "lane" in the optometrist's office. Capital letter E is typically displayed and the patient is asked to report the orientation of E. Three repeated lines of this orientation requiring visual resolution E are determined, indicating a threshold for the patient's ability to resolve the angular structure. Or conventional alphabetical charts are also widely used. This involves presenting the patient with letters of different sizes at a fixed distance and determining the minimum letter size that the patient can resolve. The logMAR map can also be estimated by optical modeling and ray tracing alone without patient input. In this modeling approach, the perceptual elements of the visual representation may be represented by empirical functions. Broadly, logMAR 0.0 means that the patient is resolving 1 arc minute at the channel distance. Better visual acuity means that the patient can resolve features less than 1 arc minute. The