WO2022219214A1 - Lentille de correction de la vision - Google Patents

Lentille de correction de la vision Download PDF

Info

Publication number
WO2022219214A1
WO2022219214A1 PCT/ES2022/070197 ES2022070197W WO2022219214A1 WO 2022219214 A1 WO2022219214 A1 WO 2022219214A1 ES 2022070197 W ES2022070197 W ES 2022070197W WO 2022219214 A1 WO2022219214 A1 WO 2022219214A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
vision correction
correction lens
center
lenticular body
Prior art date
Application number
PCT/ES2022/070197
Other languages
English (en)
Spanish (es)
Inventor
Juan Carlos CALVO LEÓN
Julio VILLAVERDE ROSENDE
Original Assignee
Sport Vision S.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sport Vision S.L. filed Critical Sport Vision S.L.
Publication of WO2022219214A1 publication Critical patent/WO2022219214A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/04—Contact lenses for the eyes
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Definitions

  • the present invention relates to a vision correction lens, which can encompass two types: intraocular and ocular surface.
  • All lenses for ophthalmic use have an optical center, which is normally at the geometric center of the lens.
  • the human eye is not a centered optical system since its surfaces are neither of revolution nor centered and perpendicular to each other, which means that it does not have an optical axis that coincides with the geometric centers of its structures.
  • a visual axis which is defined as the one that joins the fixation object with the first nodal point and the second nodal point with the center of the foveola on the retina. This axis is also called achromatic, because the rays that pass through it are neither deflected nor have transverse chromatic aberration, or this is minimal.
  • the pupillary axis which is the one that joins the fixation object with the center of the entrance pupil of the eye.
  • the angle formed by the visual axis and the pupillary axis is called kappa and its projection on the cornea is called the “mu chord”.
  • lenses that go in frames there are two other types of lenses that are used very frequently, and they are contact lenses -or lenses-, and intraocular lenses -which are inserted inside the globe eyepiece in different positions to try to compensate for graduation defects that an eye may have or due to problems of lack of transparency, especially at the level of the lens (cataract)-, and which are classified as anterior chamber intraocular lenses -the so-called ICL-, and pseudophakic intraocular lenses.
  • cataract surgery a cut is made in the lens capsule -capsulorhexis-, then the capsule of the lens nucleus is emptied, and the intraocular lens is placed inside this capsule.
  • Both contact lenses and intraocular lenses comprise a lenticular body with a centered optical center.
  • Intraocular lenses also have filaments called haptics or haptic handles on the sides, which serve to hold the lens and center it within the capsule according to the geometric axes of its structures, that is, as aligned as possible with the axis of the lens.
  • pupillary so that the central point of the lens -the center of the group that includes the lenticular body and the haptic loops, and where the optical center of the lenticular body is located- is located in coincidence with the center of the capsule, and therefore therefore with the pupillary axis.
  • centering is carried out by the concave shape of the lens itself, corresponding to the convexity of the cornea in the pupil area.
  • the haptic loops of intraocular lenses are symmetrical and have the same dimensions, so that the lens -when it is placed in the capsular bag- is centered with respect to this capsule, and depending on the anatomy of each individual it will have a better or worse centering relative to the pupillary axis.
  • the centering of intraocular lenses -both phakic and pseudophakic lenses- and of contact lenses with respect to the situation of the pupillary axis, depending on the patient's anatomy, can result in entoptic phenomena such as halos, distortion, prismatic effect, ghost lights, etc.
  • the centering of multifocal, bifocal, trifocal intraocular lenses, etc. which due to their design require greater precision in centering, preferably with respect to the monocular and/or binocular visual axis, is especially important.
  • the vision correction lens of the invention is of the type that comprises a lenticular body with an optical center where, according to the invention, the optical center is offset from the central point of the lens, that is, the geometric center with respect to the edge of the lens (the edge of the lenticular body in contact lenses or the center of the set that includes the lenticular body and the haptic loops) and that is the one that is positioned on the axis of the pupil when the lens is placed.
  • the surgeon can have one or several intraocular lenses of the invention with different offsets, and can choose the one that best suits each case, for better centering with respect to of the monocular and/or binocular visual axis of each patient.
  • Figures 1a and 1b.- Show, respectively, a lens of the invention in contact lens format, and the same lens placed in an eye.
  • Figure 2. Shows a partial section of a pupil with a lens of the invention in intraocular format, placed.
  • FIGS 3 and 4.- Show respective views of respective variants of the lens of the invention in intraocular format.
  • the vision correction lens (1) of the invention is of the type (see Figs. 1a and 2) that comprise a lenticular body (2) with an optical center (20), where according to the invention, the optical center (20) is off center with respect to the central point (10) of the lens (1) (that is, the point coinciding with the pupillary axis (22)).
  • the optical center (20) is offset from the geometric center (21) of the lenticular body (2) (which will be defined by the edge of the lens in lenses). of contact) so that, although the lenticular body (2) is centered with respect to the pupil (and therefore with respect to the pupillary axis (22)), its optical center (20) is off-center with respect to the central point (10) of the lens (1), which is coincident with the geometric center (21) of the lenticular body (2).
  • both soft and hybrid scleral support and rigid scleral lenses which currently have their optical center (20) in the geometric center (21), so that by means of the invention they can be implement different offsets that can be in steps of 0.1 mm towards the nasal or temporal, also depending on whether they are for a right or left eye, in addition to the offset in superior and inferior.
  • the lens Due to the criticality of their centering to maintain the optical center in coincidence with the visual axis (100) of the eye, once placed, they must have a marking (11) (laser engraving for example) that indicates eye and offset, as well such as the orientation marks on the bottom of it to know the positioning result of the lens once placed on the eye.
  • a marking (11) laser engraving for example
  • the lens In order for the positioning to be as stable as possible and in order to prevent the lens from rotating in the eye, it is convenient for the lens to have internal radii of curvature that adapt to the surface of the cornea, for example 7.80 mm in the horizontal meridian and 8.1 Omm in the vertical, which makes rotation difficult, they can also have aspherical surfaces, which can also help to facilitate adaptation, in addition to the visual advantages that this type of surface provides.
  • the lens In order to make it easier for the lens to self-center and place in position for use, it is convenient for the lens to have a lower base ballast or prism (12), which provides more weight in the lower area of the lens, along with the markings on that area that help both the professional and the user to visually identify which position of use is appropriate.
  • the lenticular body (2) comprises haptic loops (3) for centering the lens capsule (5). It would be the option for intraocular lens. For this reason, these haptic loops (3) can be made asymmetrical (see figs. 3 and 4), achieving an off-center placement of the lenticular body (2) so that the optical center (20) of the lenticular body (2) is positioned in coincidence with the visual axis (100). These intraocular lenses can be combined (see fig 2) with asymmetric haptics (3) and an off-center optical center (20) with respect to the geometric center (21) of the lenticular body (2). For their part, the haptic loops (3) can be simple, branched, simple and branched haptic loops (3) can be combined in the same lens, and/or comprise eyelets (30).

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

Lentille (1) de correction de la vision; du type qui comprend un corps lenticulaire (2) avec un centre optique (20), le centre optique (20) étant décentré par rapport au point central (10) de la lentille (1).
PCT/ES2022/070197 2021-04-12 2022-04-01 Lentille de correction de la vision WO2022219214A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES202130735U ES1267984Y (es) 2021-04-12 2021-04-12 Lente de correccion de la vision
ESU202130735 2021-04-12

Publications (1)

Publication Number Publication Date
WO2022219214A1 true WO2022219214A1 (fr) 2022-10-20

Family

ID=75900608

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2022/070197 WO2022219214A1 (fr) 2021-04-12 2022-04-01 Lentille de correction de la vision

Country Status (2)

Country Link
ES (1) ES1267984Y (fr)
WO (1) WO2022219214A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011151839A2 (fr) * 2010-05-31 2011-12-08 Ram Srikanth Mirlay Ensemble optique concentré sur une fovéa et centré sur une pupille pour une lentille intraoculaire
EP3115830A1 (fr) * 2014-03-04 2017-01-11 Menicon Co., Ltd. Lentille de contact de type décentré et jeu de lentilles de contact de type décentré
WO2021056059A1 (fr) * 2019-09-25 2021-04-01 Nthalmic Holding Pty Ltd Solution de lentille de contact de forme libre pour myopie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011151839A2 (fr) * 2010-05-31 2011-12-08 Ram Srikanth Mirlay Ensemble optique concentré sur une fovéa et centré sur une pupille pour une lentille intraoculaire
EP3115830A1 (fr) * 2014-03-04 2017-01-11 Menicon Co., Ltd. Lentille de contact de type décentré et jeu de lentilles de contact de type décentré
WO2021056059A1 (fr) * 2019-09-25 2021-04-01 Nthalmic Holding Pty Ltd Solution de lentille de contact de forme libre pour myopie

Also Published As

Publication number Publication date
ES1267984U (es) 2021-05-19
ES1267984Y (es) 2021-09-13

Similar Documents

Publication Publication Date Title
ES2411709T3 (es) Lente intraocular tórica asférica
US6224211B1 (en) Super vision
ES2733681T3 (es) Lentes ópticas multifocales
ES2968639T3 (es) Sistema de lentes intraoculares
ES2555297T3 (es) Lente oftálmica con sectores ópticos
ES2845554T3 (es) Lente intraocular multifocal para optimizar la visión periférica
ES2325988T3 (es) Lente oftalmico multifocal.
ES2426451T3 (es) Lentes intracorneales que tienen un orificio central
ES2914102T3 (es) Implantes oftálmicos con profundidad de campo ampliada y agudeza visual a distancia mejorada
ES2262198T3 (es) Lentes de contacto que mejoran la agudeza visual.
ES2316614T3 (es) Mejoras de la correccion de la vision con presbicia.
ES2966914T3 (es) Lentes ópticas para corrección de la visión
ES2822609T3 (es) Lente intraocular con sectores ópticos activos adicionales superpuestos parcialmente en lados opuestos
US20110118836A1 (en) Mark for intraocular lenses
ES2777525T3 (es) Lente intraocular multifocal con profundidad de campo extendida
ES2246229T3 (es) Implante para la correccion de la presbicia en ojos faquicos.
BR102013004556A2 (pt) Design de lente multiaxial para astigmatismo
US20130331937A1 (en) Intraocular implant and method for fixing same into an eye
ES2912080T3 (es) Implantes oftálmicos con mayor profundidad de campo y agudeza visual mejorada a distancia
ES2844982T3 (es) Lente para astigmatismo
ES2755817T3 (es) Lente progresiva para gafas, método de fabricación de una lente progresiva para gafas y método de diseño de una lente progresiva para gafas
ES2406380B1 (es) Lente de contacto de ortoqueratología.
WO2022219214A1 (fr) Lentille de correction de la vision
ES2955675T3 (es) Método de fabricación de una lente de gafas, lente de gafas acabada sin cortar y primordio de lente semiacabado
CN210494319U (zh) 一种双光学部人工晶体套件

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22787677

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22787677

Country of ref document: EP

Kind code of ref document: A1