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1. WO2013015743 - OPTICAL LENS FOR SLOWING MYOPIA PROGRESSION

Publication Number WO/2013/015743
Publication Date 31.01.2013
International Application No. PCT/SG2012/000255
International Filing Date 17.07.2012
IPC
G02C 7/02 2006.01
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems
G02C 7/04 2006.01
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems
04Contact lenses for the eyes
G02C 7/06 2006.01
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems
06bifocal; multifocal
CPC
G02C 2202/24
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
2202Generic optical aspects applicable to one or more of the subgroups of G02C7/00
24Myopia progression prevention
G02C 7/042
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems ; ; Methods of designing lenses
04Contact lenses for the eyes
041bifocal; multifocal
042Simultaneous type
G02C 7/044
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems ; ; Methods of designing lenses
04Contact lenses for the eyes
041bifocal; multifocal
044Annular configuration, e.g. pupil tuned
G02C 7/06
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems ; ; Methods of designing lenses
06bifocal; multifocal ; ; progressive
Applicants
  • NATIONAL UNIVERSITY OF SINGAPORE [SG]/[SG] (AllExceptUS)
  • THE HONG KONG POLYTECHNIC UNIVERSITY [CN]/[CN] (AllExceptUS)
  • SAW, Seang Mei [SG]/[SG] (UsOnly)
  • LAM, Siu Yin, Carly [CN]/[CN] (UsOnly)
  • TO, Chi-Ho [CN]/[CN] (UsOnly)
  • TSE, Yan-Yin [CN]/[CN] (UsOnly)
Inventors
  • SAW, Seang Mei
  • LAM, Siu Yin, Carly
  • TO, Chi-Ho
  • TSE, Yan-Yin
Agents
  • POH, Chee Kian Daniel
Priority Data
61/512,25527.07.2011US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL LENS FOR SLOWING MYOPIA PROGRESSION
(FR) LENTILLE OPTIQUE POUR RALENTIR LA PROGRESSION DE LA MYOPIE
Abstract
(EN)
An optical lens for a human eye is disclosed herein. In a described embodiment, the optical lens is in the form of a contact lens 100 which comprises a plurality of alternating optic zones 102 arranged between a centre 104 and a periphery 106 of the contact lens 100. The alternating optic zones 102 include a plurality of annular vision correction regions CZ1CZ5 having first refractive powers for correcting myopic refractive errors to create a focused retina image. The first refractive powers are more hyperopic at the lens' periphery 106 than at the lens' centre 104. The optic zones 102 further includes a plurality of annular vision defocus regions DZ1DZ5 having second refractive powers for creating a defocused retina image, wherein the plurality of annular vision defocus regions (DZ1DZ5) are arranged to alternate with respective ones of the plurality of annular vision correction regions (CZ1CZ5). With such a configuration, the contact lens 100 is useful for slowing myopia progression.
(FR)
L'invention porte sur une lentille optique pour un œil humain. Selon un mode de réalisation décrit, la lentille optique est sous la forme d'une lentille de contact 100 qui comprend une pluralité de zones optiques alternées (102), agencées entre un centre (104) et une périphérie (106) de la lentille de contact (100). Les zones optiques alternées (102) comprennent une pluralité de régions de correction de vision annulaires CZ1CZ5 ayant de premières réfringences pour corriger des erreurs de réfraction myopes pour créer une image de rétine focalisée. Les premières réfringences sont plus hypermétropes à la périphérie de la lentille (106) qu'au centre de la lentille (104). Les zones optiques (102) comprennent en outre une pluralité de régions de défocalisation de vision annulaires DZ1DZ5 ayant de secondes réfringences pour créer une image de rétine défocalisée, la pluralité de régions défocalisées de vision annulaires (DZ1DZ5) étant agencées pour être en alternance avec celles respectives de la pluralité de régions de correction de vision annulaires (CZ1CZ5). Avec une telle configuration, la lentille de contact (100) est utile pour ralentir la progression de la myopie.
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