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Title:
GEOMETRIC VOLUME CONTROL CORNEAL REFRACTIVE THERAPY CONTACT LENS
Document Type and Number:
WIPO Patent Application WO/2022/183409
Kind Code:
A1
Abstract:
A contact lens for treating myopia of an eye of a patient comprises an anterior surface; and a posterior surface having a semi-meridian defining: a central compression zone (CCZ) to contact the pretreatment cornea, a volume control zone (VCZR1,VCZR2) peripheral to the central compression zone (CCZ), a secondary compression zone (SCZ) to contact the pretreatment cornea, wherein the secondary compression zone (SCZ) is peripheral to the volume control zone (VCZR1,VCZR2), a peripheral relief zone (PRZ) peripheral to the secondary compression zone (SCZ), a landing zone (LZ) to contact the pretreatment cornea, wherein the landing zone (LZ) is peripheral to the peripheral relief zone (PRZ), and an edge terminus (ET) peripheral to the landing zone (LZ).

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Inventors:
LEGERTON JEROME A (US)
LIU JIDONG (CN)
Application Number:
PCT/CN2021/078909
Publication Date:
September 09, 2022
Filing Date:
March 03, 2021
Export Citation:
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Assignee:
SHENYANG KANGENDE MEDICAL SCIENCE AND TECH CO LTD (CN)
International Classes:
G02C7/04
Foreign References:
CN110235051A2019-09-13
CN104823100A2015-08-05
CN111033360A2020-04-17
CN1672085A2005-09-21
CN212364749U2021-01-15
US20160299356A12016-10-13
US20090237612A12009-09-24
Other References:
See also references of EP 4278230A4
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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