Invention Grant
- Patent Title: Systems and methods for refractive correction in visual field testing
- Patent Title (中): 视野测试中屈光矫正的系统和方法
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Application No.: US13422935Application Date: 2012-03-16
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Publication No.: US08668338B2Publication Date: 2014-03-11
- Inventor: Göran Anders Johansson , Matthew J. Everett , Christopher J. R. V. Baker
- Applicant: Göran Anders Johansson , Matthew J. Everett , Christopher J. R. V. Baker
- Applicant Address: US CA Dublin
- Assignee: Carl Zeiss Meditec, Inc.
- Current Assignee: Carl Zeiss Meditec, Inc.
- Current Assignee Address: US CA Dublin
- Agency: Morrison & Foerster LLP
- Main IPC: A61B3/02
- IPC: A61B3/02

Abstract:
Systems and methods for providing variable refractive correction in a visual field testing device are presented. One embodiment of the variable refractive correction involves two or more aligned transmissive plates arranged to produce changes in refractive power by translation or rotation of the plates relative to each other. Several alternative designs for providing variable refractive correction are described. The refractive correction can be set manually or automatically based on knowledge of the refractive error of a specific patient and spherical and cylindrical refractive correction are possible. Additional lens systems can be used to extend the range of refractive correction to accommodate a larger patient population.
Public/Granted literature
- US20130070204A1 Systems and Methods for Refractive Correction in Visual Field Testing Public/Granted day:2013-03-21
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