- Patent Title: Geometric volume control corneal refractive therapy contact lens
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Application No.: US17616154Application Date: 2021-03-03
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Publication No.: US11774779B2Publication Date: 2023-10-03
- Inventor: Jerome A. Legerton , Jidong Liu
- Applicant: SHENYANG KANGENDE MEDICAL SCIENCE AND TECHNOLOGY CO., LTD.
- Applicant Address: CN Shenyang
- Assignee: SHENYANG KANGENDE MEDICAL SCIENCE AND TECHNOLOGY CO., LTD.
- Current Assignee: SHENYANG KANGENDE MEDICAL SCIENCE AND TECHNOLOGY CO., LTD.
- Current Assignee Address: CN Shenyang
- Agency: Sheppard Mullin Richter & Hampton LLP
- International Application: PCT/CN2021/078909 2021.03.03
- International Announcement: WO2022/183409A1 2022.09.09
- Date entered country: 2021-12-02
- Main IPC: G02C7/04
- IPC: G02C7/04 ; A61F9/013

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 to contact the pretreatment cornea, a volume control zone peripheral to the central compression zone, a secondary compression zone to contact the pretreatment cornea, wherein the secondary compression zone is peripheral to the volume control zone, a peripheral relief zone peripheral to the secondary compression zone, a landing zone to contact the pretreatment cornea, wherein the landing zone is peripheral to the peripheral relief zone, and an edge terminus peripheral to the landing zone.
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