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An Augmented Reality System for Online Marking of Astigmatism Axis

An astigmatism axial position and augmented reality technology, which is applied in the field of augmented reality technology for real-time indication of corneal astigmatism axial position, can solve the problem that the corneal astigmatism axial position cannot be calibrated online, and achieves the effect of convenient and accurate astigmatism positioning operation.

Active Publication Date: 2021-07-13
WENZHOU MEDICAL UNIV
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the background technology, the present invention provides an augmented reality system for online marking of the astigmatism axis, which mainly solves the problem that the corneal astigmatism axis cannot be marked online in the prior art

Method used

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  • An Augmented Reality System for Online Marking of Astigmatism Axis
  • An Augmented Reality System for Online Marking of Astigmatism Axis
  • An Augmented Reality System for Online Marking of Astigmatism Axis

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings: an augmented reality system for marking the axial position of astigmatism online, including: a microscopic imaging unit and a laser pointing unit, and the microscopic imaging unit includes an eyepiece optical path assembly 101 arranged in sequence , binocular tube optical path assembly 102, dichroic prism 103, variable magnification optical path assembly 104 and objective lens 105; the laser pointing unit includes a laser emitter 401 and a lens 405 that can rotate along its own axis; the laser emitted by the laser emitter passes through The objective lens is refracted by the dichroic prism and projected on the eye 7 to mark the astigmatism axis of the object to be inspected. The present invention provides an augmented reality system for online marking of the astigmatism axis position. The astigmatism axis position of the inspected object can be marked and indicated in rea...

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Abstract

An augmented reality system for marking the axis of astigmatism online. The method mainly solves the problem that the corneal astigmatism axis cannot be calibrated online in the prior art. The present invention provides an augmented reality system for online marking of the astigmatism axis position. The astigmatism axis position of the inspected object can be marked and indicated in real time through the laser indicating unit in the microscopic imaging field of view, so that the observer can see the astigmatism axis at the same time under the microscope. Track the axis position, convenient and accurate astigmatism positioning operation.

Description

technical field [0001] The invention relates to the field of optical equipment, in particular to a device system for marking the axial position of astigmatism online, and in particular to an augmented reality technology for marking the axial position of corneal astigmatism in real time during ophthalmic surgery. Background technique [0002] Astigmatism is a common refractive error, and approximately 50% of cataract patients require correction of corneal astigmatism during cataract surgery. Implantation of Toric intraocular lens is one of the main ways to treat cataract with astigmatism at present. Clinical practice shows that the Toric IOL has strict requirements on the alignment of the IOL astigmatism axis and the corneal astigmatism axis. After the Toric IOL is implanted, every 1° rotation of the IOL will result in a 3.3% loss of astigmatism correction; when the rotation reaches 30°, it will completely lose the correcting effect on astigmatism; when the rotation exceeds ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/103A61F9/007G02B21/00G02B21/06G02B21/36G02B27/34
CPCA61B3/1035A61F9/007G02B21/0004G02B21/06G02B21/361G02B27/34
Inventor 冯海华厉以宇潘安鹏俞阿勇
Owner WENZHOU MEDICAL UNIV
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