Invention Grant
- Patent Title: Contact lens for myopia control
- Patent Title (中): 隐形眼镜用于近视控制
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Application No.: US13604130Application Date: 2012-09-05
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Publication No.: US08783863B2Publication Date: 2014-07-22
- Inventor: Chung Lin Wang
- Applicant: Chung Lin Wang
- Applicant Address: TW Taichung
- Assignee: Largan Medical Co., Ltd.
- Current Assignee: Largan Medical Co., Ltd.
- Current Assignee Address: TW Taichung
- Agency: Morris, Manning & Martin, LLP
- Agent Tim Tingkang Xia, Esq.
- Priority: TW101116147A 20120507
- Main IPC: G02C7/04
- IPC: G02C7/04

Abstract:
This invention provides a contact lens for myopia control comprising: an object-side surface comprising a central zone, a transition zone and a peripheral zone which are concentric and have different refractive power, at least one of the three zones being aspheric; and an image-side surface; wherein the central zone provides correction power to focus a foveal image on the retina, the peripheral zone provides a myopic defocus effect by generating a para-fovea image in front of the retina, and the transition zone with one or more focuses provides a refractive power in diopter (D) ranging from +0.25 D to +8.00 D.
Public/Granted literature
- US20130293834A1 CONTACT LENS FOR MYOPIA CONTROL Public/Granted day:2013-11-07
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