AR operation navigation system and method for lamellar keratoplasty

Abstract

The invention provides an AR operation navigation system and method for lamellar keratoplasty. The AR operation navigation system for the lamellar keratoplasty includes a camera unit, a processing unit and an AR unit connected in turn; the camera unit is used for obtaining a video image in the process of the lamellar keratoplasty; the processing unit is used for segmenting a corneal contour in each frame of the video image to obtain a multi-frame corneal contour image, the multi-frame corneal contour image is divided into multiple keyframe corneal contour images and multiple occlusion frame corneal contour images, when current frame corneal contour images are the occlusion frame corneal contour images, occluded motion information of the current frame corneal contour images is restored, thekeyframe corneal contour images are deformed to reconstruct the current frame corneal contour images, then the AR unit is controlled to overlay a marker in the current frame corneal contour images tomark the contour of cornea and a plurality of positions of corneal suture, thus a doctor is guided to find the positions of the corneal suture timely and accurately, and the success rate of an operation is increased.

Description

technical field [0001] The invention relates to the field of ophthalmic surgery, in particular to a lamellar keratoplasty AR surgery navigation system and method. Background technique [0002] Corneal disease is one of the most important blinding eye diseases in the world. The incidence rate in my country is only second to cataract, about 11.5 / 10000. With the development of technology, Deep Anterior Lamellar Keratoplasty (DALK) has become the only effective treatment for diseases such as infectious corneal ulcers that cannot be treated by drugs. Lamellar keratoplasty is based on partial tissue of the cornea. In the operation performed by the subject, only the superficial corneal tissue with lesions was removed, and the relatively intact recipient cornea in the deep layer was still reserved as a transplant bed, and then the corneal material of the same size and thickness was taken as a superficial corneal piece, which was sewed on the wounded surface of the patient's cornea ...

AI Technical Summary

Problems solved by technology

[0003] However, lamellar keratoplasty has strict requirements on the skills and experience of doctors. Due to the complex scene of lamellar keratoplasty, the operation time is long, and the interference of blood pollution and surgical instruments is relatively large during the operation. It is very vague, so it is difficult to locate the corneal suture needle position during lamellar keratopl

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