CN103156572B - A kind of corneal astigmatism real-time location method and positioner thereof - Google Patents
A kind of corneal astigmatism real-time location method and positioner thereof Download PDFInfo
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- CN103156572B CN103156572B CN201310109000.0A CN201310109000A CN103156572B CN 103156572 B CN103156572 B CN 103156572B CN 201310109000 A CN201310109000 A CN 201310109000A CN 103156572 B CN103156572 B CN 103156572B
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Abstract
The present invention relates to a kind of corneal astigmatism real-time location method and positioner thereof, described positioner comprises surgical operation microscope, camera head, image processing apparatus and display unit, the output of described camera head is connected with image processing apparatus, the output of image processing apparatus is connected with display unit, on described surgical operation microscope camera lens, be coaxially provided with circular lamp body, described camera head is made a video recording to the image of observing from surgical operation microscope, and image is delivered in image processing apparatus, in described image processing apparatus, be provided with circular lamp body reflected image on cornea is carried out to ellipse fitting unit, image processing apparatus marks oval long axial direction and is delivered to display unit after the image of input is processed and shows. this corneal astigmatism real-time positioning apparatus carries out ellipse fitting by image processing apparatus to circular lamp body reflected image on cornea, and mark oval long axial direction, also just indicated patient's corneal astigmatism axial, simplify the step of corneal astigmatism location, can be without preoperative location, got rid of the man's activity of doctor's subjective judgement, accuracy is high, and real-time is good.
Description
Technical field
The present invention relates to a kind of cornea localization method and device, specifically in ophthalmologic operation, locate in real time corneal astigmatism real-time location method and the positioner thereof of cornea astigmatism axial direction, and indicate the system of operative incision position and intraocular lens's implantation position.
Background technology
Astigmatism is a key factor that affects eyes imaging quality, and in cataract patient, about 40% needs of patients is corrected corneal astigmatism. Along with improving constantly that patient requires postoperative visual function, become study hotspot by implanting astigmatic type intraocular lens (ToricIOL) rectification cataract patient corneal astigmatism. In order to reach the effect of epithesis cornea astigmatism, need in art, ToricIOL astigmatism axle mark line and the strongest meridian of corneal refractive power to be overlapped, therefore axial location and the mark of corneal astigmatism seems very important. Due to eyeball rotation, cornea horizontal position may be different during with dorsal position at seat, so need carry out in the preoperative mark. Conventional localization method is: 1) pre-operative patients is got seat, does 3,9 o ' clock position marks at corneal limbus place, and two gauge points and pupil center are point-blank; 2) in art taking gauge point as benchmark, with angle mark device operate incision site and intraocular lens's implantation position mark. But the problem causing is thus: 1, subjectivity is strong: preoperative location depends on doctor's subjective judgement, and the accuracy that directly impact is finally located; 2, complex steps, the probability of increase systematic error; 3 is consuming time; If 4 corrective surgery stand-by period are long, preoperative telltale mark can disappear sometimes, need to again relocate, and increases patient suffering.
Summary of the invention
The object of the invention is to provide in order to overcome the deficiencies in the prior art the axial real-time location method of corneal astigmatism and positioner thereof in a kind of art, the axial real-time positioning apparatus of this corneal astigmatism can be on the position basis of operation, can in operation, detect in real time patient's corneal astigmatism axial, overcome conventional method because detecting the deficiencies such as poor accuracy different with operation position and that bring due to the impact of doctor's subjective judgement, complex steps, consuming time, increase patient suffering.
For achieving the above object, the invention discloses a kind of corneal astigmatism real-time location method, described method is provided with a circular light source, and by the reflected image of this circular light source on cornea carried out to ellipse fitting, mark oval long axial direction, thereby it is axial to indicate corneal astigmatism. the present invention discloses a kind of corneal astigmatism real-time positioning apparatus, it is characterized in that described positioner comprises surgical operation microscope, camera head, image processing apparatus and display unit, the output of described camera head is connected with image processing apparatus, the output of image processing apparatus is connected with display unit, on described surgical operation microscope camera lens, be coaxially provided with circular lamp body, described camera head is made a video recording to the image of observing from surgical operation microscope, and image is delivered in image processing apparatus, in described image processing apparatus, be provided with circular lamp body reflected image on cornea is carried out to ellipse fitting unit, image processing apparatus marks oval long axial direction and is delivered to display unit after the image of input is processed and shows.
Compared with prior art, this corneal astigmatism real-time positioning apparatus carries out ellipse fitting by image processing apparatus to circular lamp body reflected image on cornea, and mark oval long axial direction, also just indicated patient's corneal astigmatism axial, simplify the step of corneal astigmatism location, can be without preoperative location, get rid of the man's activity of doctor's subjective judgement, and this process is to carry out in surgical procedure, therefore do not exist because detecting the deviations of bringing different from operation position, accuracy is high, and real-time is good.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Brief description of the drawings
Fig. 1 is positioner detailed description of the invention structural representation of the present invention;
Fig. 2 is circular lamp body structure front view;
Fig. 3 is that in art, corneal astigmatism is axially located exemplary plot in real time.
Detailed description of the invention
The main design of corneal astigmatism real-time location method of the present invention is to be provided with a circular light source, and by the reflected image of this circular light source on cornea carried out to ellipse fitting, mark oval long axial direction, thereby it is axial to indicate corneal astigmatism. the concrete device of realizing said method is as follows: as shown in Figure 1, corneal astigmatism real-time positioning apparatus comprises surgical operation microscope 1, camera head 2, image processing apparatus 3 and display unit 4, also can select the directly surgical operation microscope 1 with camera head 2, camera head 2 is made a video recording to the image of observing by surgical operation microscope 1, the output of described camera head 2 is connected photographic image is outputed in image processing apparatus 3 with image processing apparatus 3, and in this device, image processing apparatus 3 can be selected desktop computer or laptop computer etc. described circular lamp body 5 is arranged on the camera lens of surgical operation microscope 1, as shown in Figure 2, in this specific embodiment, described circular lamp body 5 comprises an annular lamp holder 501, described annular lamp holder 501 is provided with a circle annular LED lamp 502 and power circuit 503 forms described circular lamp body 5, this device is selected high-brightness blue LED, the dead in line of circular lamp body 5 and surgical operation microscope 1 camera lens is coaxial, for convenient for maintaining and adjusting, described circular lamp body 5 preferably adopts dismountable mode to be arranged on surgical operation microscope 1 camera lens. can be to be specifically provided with and to be along the circumferential direction evenly provided with 2 radially screws that connect above at described annular lamp holder 501, in screw, be provided with holding screw 504, withstand on surgical operation microscope 1 camera lens circular lamp body 5 is removably mounted on to surgical operation microscope 1 camera lens by holding screw 504, the plane at circular lamp body 5 places is perpendicular with the axis of surgical operation microscope 1 camera lens, the dead in line of center and surgical operation microscope 1 camera lens, regulate the screw-in position of holding screw 504, it is the center of adjustable circular lamp body 5, on described annular lamp holder 501, be also provided with circular lamp body 5 brightness adjusting unit, circular lamp body 5 adopts 3V, 300mA adjustable DC power supply is as working power, the adjustable resistance of connecting is used for regulating light-source brightness. described camera head 2 is made a video recording to the image of observing from surgical operation microscope 1, and image is delivered in image processing apparatus 3, in described image processing apparatus 3, be provided with circular lamp body 5 reflected image on cornea is carried out to ellipse fitting unit, image processing apparatus 3 marks oval long axial direction and is delivered to display unit 4 after the image of input is processed and shows, as shown in Figure 3,1A is reference levels position, it in this example, is also operative incision position, 2A is that corneal astigmatism is axial, and 3A is intraocular lens's implantation position. ellipse fitting unit can be realized by internal processes, specifically can adopt C Plus Plus to write, and under MicrosoftVisualStudio2008 environment, realizes. software obtains after the former figure of operation video frequency by camera head 2, first by certain threshold value by image binaryzation, recycling Opencv carries searching profile function, filter out the reflection image of annular LED light source by condition control, and deposit the point set in reflection image in an array, by the marginal point data that get, just can simulate ellipse by least square method, draw a red line at oval long axial direction, be corneal astigmatism axial, and indicate operative incision position and intraocular lens's implantation position, and result is presented to display unit 4 as on LCDs. program composition belongs to prior art, repeats no more herein.
Claims (1)
1. a corneal astigmatism real-time positioning apparatus, it is characterized in that: described positioner comprises surgical operation microscope, camera head, image processing apparatus and display unit, the output of described camera head is connected with image processing apparatus, the output of image processing apparatus is connected with display unit, on described surgical operation microscope camera lens, be coaxially provided with circular lamp body, described camera head is made a video recording to the image of observing from surgical operation microscope, and image is delivered in image processing apparatus, in described image processing apparatus, be provided with circular lamp body reflected image on cornea is carried out to ellipse fitting unit, image processing apparatus marks oval long axial direction and is delivered to display unit after the image of input is processed and shows, described circular lamp body comprises an annular lamp holder, described annular lamp holder is provided with a circle annular LED lamp and the described circular lamp body of power circuit composition, described circular lamp body is removably mounted on surgical operation microscope camera lens, described annular lamp holder is provided with and is along the circumferential direction evenly provided with 2 radially screws that connect above, in screw, be provided with holding screw, described circular lamp body is removably mounted on surgical operation microscope camera lens by holding screw, is also provided with circular lamp body brightness adjusting unit on described annular lamp holder.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6305187B2 (en) * | 2014-04-21 | 2018-04-04 | 三鷹光器株式会社 | Surgical microscope system |
| CN104921698B (en) * | 2015-07-13 | 2016-08-24 | 中北大学 | A kind of method revising corneal curvature instrument system astigmatism |
| CN105342749B (en) * | 2015-09-30 | 2017-08-25 | 深圳艾尼尔角膜工程有限公司 | A kind of cornea automatic station-keeping system and method |
| CN105438825B (en) * | 2015-12-25 | 2017-08-04 | 深圳艾尼尔角膜工程有限公司 | A kind of cornea is automatically positioned and detecting system and method |
| CN106344173A (en) * | 2016-09-21 | 2017-01-25 | 爱博诺德（北京）医疗科技有限公司 | Light source for corneal astigmatism real-time positioning device |
| CN106344258B (en) * | 2016-09-21 | 2019-03-05 | 爱博诺德（北京）医疗科技有限公司 | Lamp body for corneal astigmatism real-time positioning apparatus |
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| CN1045028A (en) * | 1989-02-06 | 1990-09-05 | 凤凰激光系统有限公司 | Method that precision surgery is used and instrument |
| CN2833637Y (en) * | 2005-10-18 | 2006-11-01 | 贵阳新天光电科技有限公司 | LED reflection lighting device for microscope |
| CN201375508Y (en) * | 2009-03-26 | 2010-01-06 | 中国人民解放军第四军医大学 | Total view field analyzing and measuring device |
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| US8820929B2 (en) * | 2006-01-20 | 2014-09-02 | Clarity Medical Systems, Inc. | Real-time measurement/display/record/playback of wavefront data for use in vision correction procedures |
| JP5717377B2 (en) * | 2010-08-30 | 2015-05-13 | キヤノン株式会社 | Image processing apparatus, image processing method, program, and program recording medium |
| CN102727175A (en) * | 2011-04-11 | 2012-10-17 | 上海美沃精密仪器有限公司 | Electronic recording and remote diagnosis digital slit lamp system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1045028A (en) * | 1989-02-06 | 1990-09-05 | 凤凰激光系统有限公司 | Method that precision surgery is used and instrument |
| CN2833637Y (en) * | 2005-10-18 | 2006-11-01 | 贵阳新天光电科技有限公司 | LED reflection lighting device for microscope |
| CN201375508Y (en) * | 2009-03-26 | 2010-01-06 | 中国人民解放军第四军医大学 | Total view field analyzing and measuring device |
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Effective date of registration: 20230615 Address after: 325000 No. 270 College West Road, Zhejiang, Wenzhou Patentee after: THE EYE HOSPITAL OF WENZHOU MEDICAL University Address before: 325000 No. 270 College West Road, Zhejiang, Wenzhou Patentee before: Yu Ayong Patentee before: Zhao Jianguo |