WO2009022025A1 - Lens for correcting ocular defects - Google Patents

Lens for correcting ocular defects Download PDF

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Publication number
WO2009022025A1
WO2009022025A1 PCT/ES2007/000479 ES2007000479W WO2009022025A1 WO 2009022025 A1 WO2009022025 A1 WO 2009022025A1 ES 2007000479 W ES2007000479 W ES 2007000479W WO 2009022025 A1 WO2009022025 A1 WO 2009022025A1
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WO
WIPO (PCT)
Prior art keywords
lens
eye
defects
implantation
correct
Prior art date
Application number
PCT/ES2007/000479
Other languages
Spanish (es)
French (fr)
Inventor
Pedro Grimaldos Ruiz
Original Assignee
Fundació Privada Catalana D'oftalmología Grimaldi
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 Fundació Privada Catalana D'oftalmología Grimaldi filed Critical Fundació Privada Catalana D'oftalmología Grimaldi
Priority to PCT/ES2007/000479 priority Critical patent/WO2009022025A1/en
Publication of WO2009022025A1 publication Critical patent/WO2009022025A1/en

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
    • 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
    • A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus

Definitions

  • the present invention is related to the treatment of the eyes to correct congenital or acquired defects therein, by proposing a contact lens for intracorneal implantation, which is adapted in a particularly advantageous way for said function.
  • Certain eye defects such as presbyopia, myopia, farsightedness, astigmatism, etc., can be minimized or corrected by the use of lenses, which can be of anteposition or contact on the eyes, being possible, sometimes, the application of treatments of surgical intervention to correct or eliminate some defects.
  • a lens intended for intracorneal implantation which has been developed with constructive and functional characteristics that make it very advantageous for the corrective application of isolated presbyopia or associated with other refractive defects, such as myopia, farsightedness. and astigmatism.
  • This lens object of the invention is constituted by an annular body, constructed of a high porosity hydrogel material (macropore), being provided with a progressive optical correction graduation.
  • a lens for intracorneal implantation is obtained, by means of a housing in the stromal bed, for the housing of the lens and its covering with the corneal layer corresponding to said housing.
  • the realization of the lens in its shape is determined with an inner diameter and an outer diameter, being able to establish a perfect personalized adjustment of the lens, which favors a better result of its function.
  • this lens also makes it perfectly compatible with the stromal tissue of the eye, but nevertheless its application is reversible, so that it can be removed from the eye by lifting the corneal layer that covers the lens in the implantation, which allows also replace the lens when advised by the development of the eye defect for which it is applied. Therefore, said contact lens of the invention results in certain advantageous characteristics, acquiring its own life and preferential character for the corrective function of the eye defects compared to the conventional elements and techniques of this application.
  • Figure 1 shows the shape of a lens according to the object of the invention.
  • the object of the invention relates to a lens intended to be applied in intracorneal implantation, possessing characteristics that make it advantageous to correct presbyopia alone or with other associated defects, such as myopia, farsightedness and astigmatism.
  • This lens is constituted by an annular body (1), made of a high porosity hydrogel material (macropore) that has a high permeability, being perfectly biocompatible with the stromal tissue of the eye for implantation.
  • annular body (1) made of a high porosity hydrogel material (macropore) that has a high permeability, being perfectly biocompatible with the stromal tissue of the eye for implantation.
  • said lens body (1) is determined with an inner contour (2) and an outer contour (3) defined with radii (R2) and (R3), so that in the application the lens implant It results with a custom fit to the eye, which makes the function of this lens very effective.
  • Said body (1) of the lens is structured - TO -
  • the implantation of the lens is carried out by making cuts in the corneal surface of the application eye, according to the inner contour and the outer contour of the iris of the lens prepared thereon, said cuts being made by laser technique, of femtosecond.
  • the lens prepared for implantation is placed, drying the area to ensure the fixation of the lens, and then the surface layer of the cornea is replaced, with which the lens is covered, the area is dried again to ensure fixing said surface covering layer.
  • the technique of implantation and the nature of the lens that is recommended allow that after implantation the lens can be removed by a simple operation, when the wearer wishes, to return to the initial state, raising the superficial layer of the cornea covering the lens and removing it, to return to replace the surface layer of the cornea in its place, where by drying the area ensures the fixation and stability of said surface layer.
  • the defects of the eye can also be corrected progressively through different lenses. its evolution, as they develop in people.

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

Abstract

Lens for correcting ocular defects, formed by an annular-shaped body (1), intended for intracorneal implantation, said body being made of a high-permeability hydrogel material (macropore), with progressive graduation of optical correction.

Description

LENTILLA PARA CORREGIR DEFECTOS OCULARES LENTILLA TO CORRECT EYE DEFECTS
Sector de la técnicaTechnical sector
La presente invención está relacionada con el tratamiento de los ojos para corregir defectos congénitos o adquiridos en los mismos, proponiendo una lentilla de aplicación por implante intracorneal, la cual se adapta de una forma especialmente ventajosa para dicha función.The present invention is related to the treatment of the eyes to correct congenital or acquired defects therein, by proposing a contact lens for intracorneal implantation, which is adapted in a particularly advantageous way for said function.
Estado de la técnicaState of the art
Determinados defectos oculares, como la presbicia, miopía, hipermetropia, astigmatismo, etc., se pueden minimizar o corregir mediante la utilización de lentes, que pueden ser de anteposición o de contacto sobre los ojos, siendo posible, a veces, la aplicación de tratamientos de intervención quirúrgica para corregir o eliminar algunos defectos.Certain eye defects, such as presbyopia, myopia, farsightedness, astigmatism, etc., can be minimized or corrected by the use of lenses, which can be of anteposition or contact on the eyes, being possible, sometimes, the application of treatments of surgical intervention to correct or eliminate some defects.
Los ojos son sin embargo unos órganos especialmente delicados, de manera que la aplicación de elementos accesorios sobre ellos requiere una adaptación minuciosa de dichos elementos y además que éstos resulten compatibles en cada caso; mientras que en las intervenciones quirúrgicas es necesaria una precisión muy meticulosa, dependiendo también de los medios y elementos que se utilizan.The eyes are, however, especially delicate organs, so that the application of accessory elements on them requires a thorough adaptation of said elements and also that these are compatible in each case; while in surgical interventions a very meticulous precision is necessary, also depending on the means and elements that are used.
Para las correcciones de los ojos es fundamental por lo tanto disponer de unos medios y elementos que se adapten con precisión al ojo de aplicación y que sean fáciles de aplicar en la forma que se halle prevista para su función. Objeto de la invenciónFor the corrections of the eyes it is therefore essential to have means and elements that adapt precisely to the eye of application and that are easy to apply in the way that is intended for its function. Object of the invention
De acuerdo con la invención se propone una lentilla destinada para implantación intracorneal, la cual se ha desarrollado con unas características constructivas y funcionales que la hacen muy ventajosa para la aplicación correctora de la presbicia aislada o asociada a otros defectos de refracción, como miopía, hipermetropia y astigmatismo.According to the invention, a lens intended for intracorneal implantation is proposed, which has been developed with constructive and functional characteristics that make it very advantageous for the corrective application of isolated presbyopia or associated with other refractive defects, such as myopia, farsightedness. and astigmatism.
Esta lentilla objeto de la invención se constituye por un cuerpo anular, construido de un material hidrogel de alta porosidad (macropore) , yendo dotado con una graduación progresiva de corrección óptica.This lens object of the invention is constituted by an annular body, constructed of a high porosity hydrogel material (macropore), being provided with a progressive optical correction graduation.
Se obtiene asi una lentilla para implante intracorneal, mediante realización de un alojamiento en el lecho estromal, para el alojamiento de la lentilla y su cubrimiento con la capa corneal correspondiente a dicho alojamiento.Thus, a lens for intracorneal implantation is obtained, by means of a housing in the stromal bed, for the housing of the lens and its covering with the corneal layer corresponding to said housing.
La realización de la lentilla en su forma se determina con un diámetro interior y un diámetro exterior, pudiendo establecerse un perfecto ajuste personalizado de la lentilla, lo cual favorece un mejor resultado de la función de la misma.The realization of the lens in its shape is determined with an inner diameter and an outer diameter, being able to establish a perfect personalized adjustment of the lens, which favors a better result of its function.
El material constructivo de esta lentilla la hace además perfectamente compatible con el tejido estromal del ojo, pero no obstante su aplicación resulta reversible, de forma que puede ser retirada del ojo levantando la capa corneal que cubre a la lentilla en la implantación, lo cual permite también sustituir la lentilla cuando asi lo aconseje el desarrollo del defecto ocular para el que se halla aplicada. Por todo ello, dicha lentilla objeto de la invención resulta de unas características ciertamente ventajosas, adquiriendo vida propia y carácter preferente para la función correctora de los defectos oculares frente a los elementos y técnicas convencionales de esta aplicación.The construction material of this lens also makes it perfectly compatible with the stromal tissue of the eye, but nevertheless its application is reversible, so that it can be removed from the eye by lifting the corneal layer that covers the lens in the implantation, which allows also replace the lens when advised by the development of the eye defect for which it is applied. Therefore, said contact lens of the invention results in certain advantageous characteristics, acquiring its own life and preferential character for the corrective function of the eye defects compared to the conventional elements and techniques of this application.
Descripción de las figurasDescription of the figures
La figura 1 muestra la forma de una lentilla según el objeto de la invención.Figure 1 shows the shape of a lens according to the object of the invention.
Descripción detallada de la invenciónDetailed description of the invention
El objeto de la invención se refiere a una lentilla destinada para ser aplicada en implantación intracorneal, poseyendo unas características que la hacen ventajosa para corregir la presbicia sola o con otros defectos asociados, como la miopía, la hipermetropía y el astigmatismo.The object of the invention relates to a lens intended to be applied in intracorneal implantation, possessing characteristics that make it advantageous to correct presbyopia alone or with other associated defects, such as myopia, farsightedness and astigmatism.
Esta lentilla, se constituye por un cuerpo (1) de forma anular, realizado de un material hidrogel de alta porosidad (macropore) que presenta una alta permeabilidad, resultando perfectamente biocompatible con el tejido estromal del ojo para la implantación.This lens is constituted by an annular body (1), made of a high porosity hydrogel material (macropore) that has a high permeability, being perfectly biocompatible with the stromal tissue of the eye for implantation.
En su realización formal dicho cuerpo (1) de la lentilla se determina con un contorno interior (2) y un contorno exterior (3) definidos con radios (R2) y (R3), de forma que en la aplicación el implante de la lentilla resulta con un ajuste personalizado al ojo, que hace muy efectiva la función de esta lentilla.In its formal embodiment, said lens body (1) is determined with an inner contour (2) and an outer contour (3) defined with radii (R2) and (R3), so that in the application the lens implant It results with a custom fit to the eye, which makes the function of this lens very effective.
Dicho cuerpo (1) de la lentilla se estructura - A -Said body (1) of the lens is structured - TO -
además con un graduación óptica progresiva, resultando de una utilidad funcional para corregir la presbicia y otros defectos oculares que ésta lleve asociados, como la miopía, la hipermetropia y el astigmatismo, con un efectividad muy elevada.also with a progressive optical graduation, resulting from a functional utility to correct presbyopia and other ocular defects associated with it, such as myopia, farsightedness and astigmatism, with very high effectiveness.
La implantación de la lentilla se realiza efectuando unos cortes en la superficie corneal del ojo de aplicación, según el contorno interior y el contorno exterior del iris de la lentilla preparada al respecto, realizándose dichos cortes mediante técnica láser, de femtosegundo.The implantation of the lens is carried out by making cuts in the corneal surface of the application eye, according to the inner contour and the outer contour of the iris of the lens prepared thereon, said cuts being made by laser technique, of femtosecond.
En la ablación realizada se coloca la lentilla preparada para la implantación, secándose la zona para asegurar la fijación de la lentilla, y después se repone la capa superficial de la cornea, con la cual se cubre la lentilla, volviéndose a secar la zona para asegurar la fijación de dicha capa superficial de cubrimiento.In the ablation performed, the lens prepared for implantation is placed, drying the area to ensure the fixation of the lens, and then the surface layer of the cornea is replaced, with which the lens is covered, the area is dried again to ensure fixing said surface covering layer.
La técnica de la implantación y la naturaleza de la lentilla que se preconiza, permiten que después de implantada la lentilla ésta pueda ser retirada mediante una operación sencilla, cuando el portador lo desee, para volver al estado inicial, levantando la capa superficial de la cornea que cubre la lentilla y extrayendo ésta, para volver a reponer luego la capa superficial de la cornea en su lugar, donde mediante un secado de la zona se asegura la fijación y estabilidad de dicha capa superficial.The technique of implantation and the nature of the lens that is recommended, allow that after implantation the lens can be removed by a simple operation, when the wearer wishes, to return to the initial state, raising the superficial layer of the cornea covering the lens and removing it, to return to replace the surface layer of the cornea in its place, where by drying the area ensures the fixation and stability of said surface layer.
Mediante la extracción de la lentilla implantada y posterior incorporación de una nueva lentilla en su lugar, se puede igualmente corregir de manera progresiva, mediante diferentes lentillas, los defectos del ojo en su evolución, a medida que se van desarrollando en las personas . By removing the implanted lens and subsequent incorporation of a new lens in its place, the defects of the eye can also be corrected progressively through different lenses. its evolution, as they develop in people.

Claims

REIVINDICACIONES
1.- Lentilla para corregir defectos oculares, destinada para corregir la presbicia sola o asociada con otros defectos oculares, mediante implantación intracorneal, caracterizada en que consta de un cuerpo (1) configurado en forma anular y realizado de un material hidrogel de alta permeabilidad (macropore), en el cual se determina una graduación progresiva de corrección óptica.1.- Contact lens to correct eye defects, intended to correct presbyopia alone or associated with other eye defects, by intracorneal implantation, characterized in that it consists of a body (1) configured in an annular form and made of a high permeability hydrogel material ( macropore), in which a progressive graduation of optical correction is determined.
2.- Lentilla para corregir defectos oculares, de acuerdo con la primera reivindicación, caracterizada en que en la forma anular el cuerpo (1) se determina con un contorno interior (2) y un contorno exterior (3), cuyos radios (R2) y (R3) se establecen para el ojo al que se destina la lentilla. 2. Contact lens to correct eye defects, according to the first claim, characterized in that in the annular form the body (1) is determined with an inner contour (2) and an outer contour (3), whose radii (R2) and (R3) are established for the eye to which the lens is intended.
PCT/ES2007/000479 2007-08-03 2007-08-03 Lens for correcting ocular defects WO2009022025A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2007/000479 WO2009022025A1 (en) 2007-08-03 2007-08-03 Lens for correcting ocular defects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2007/000479 WO2009022025A1 (en) 2007-08-03 2007-08-03 Lens for correcting ocular defects

Publications (1)

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WO2009022025A1 true WO2009022025A1 (en) 2009-02-19

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6030077A (en) * 1998-03-11 2000-02-29 Menicon Co., Ltd. Multifocal ocular lens having intermediate region with continuously varying optical power
WO2000060402A1 (en) * 1999-04-02 2000-10-12 Johnson & Johnson Vision Care, Inc. Method of designing and fitting multifocal lenses taking into account material properties of the lenses
US6520638B1 (en) * 2001-08-14 2003-02-18 Johnson & Johnson Vision Care, Inc. Methods for designing multifocal ophthalmic lenses
WO2004042453A1 (en) * 2002-10-31 2004-05-21 Johnson & Johnson Vision Care, Inc. Pupil regulated multifocal contact lenses
JP2006139292A (en) * 2005-12-12 2006-06-01 Hoya Healthcare Corp Multi-focal lens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6030077A (en) * 1998-03-11 2000-02-29 Menicon Co., Ltd. Multifocal ocular lens having intermediate region with continuously varying optical power
WO2000060402A1 (en) * 1999-04-02 2000-10-12 Johnson & Johnson Vision Care, Inc. Method of designing and fitting multifocal lenses taking into account material properties of the lenses
US6520638B1 (en) * 2001-08-14 2003-02-18 Johnson & Johnson Vision Care, Inc. Methods for designing multifocal ophthalmic lenses
WO2004042453A1 (en) * 2002-10-31 2004-05-21 Johnson & Johnson Vision Care, Inc. Pupil regulated multifocal contact lenses
JP2006139292A (en) * 2005-12-12 2006-06-01 Hoya Healthcare Corp Multi-focal lens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; *

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