Ultra-wide-area artificial eye fundus screening system launched
Prof. Lin Haotian, deputy director of Zhongshan Ophthalmology Center of Sun Yat-sen University, has developed the world's first "ultra-wide-area artificial fundus disease screening system" based on more than 100,000 color pictures of ultra-wide area fundus, which can automatically and quickly screen various fundus lesions and detect The accuracy rate is over 98%. Relevant research was published in the "Journal of Nature" sub-biology "Biocommunications" on January 8.
The fundus is the posterior segment of the eyeball, consisting of the retina, the optic papilla, the macula, and the central retina arteriovenous. Conventional fundus examination usually requires dilation, which is time-consuming and labor-intensive; while traditional fundus photography has a field of view of only 30 ° to 45 °, missed diagnosis may occur. The existing artificial fundus examination system is based on traditional fundus photography, which mainly examines the retinopathy of the posterior pole of the fundus, and has limited ability to observe the surrounding retina.
Lin Haotian's team used ultra-wide area fundus photography to avoid dilated pupils during the inspection process, and the imaging range is 200 ° ~ 240 °, which is more than 5 times that of traditional fundus photography. It can effectively observe peripheral retinopathy and can be earlier and more accurate. The retinal lesions can be detected all around, and corresponding medical guidance can be given according to the characteristics of the lesions to prevent the progress of the lesions and save the visual function of patients with fundus disease as much as possible.
Lin Haotian said that the system can accurately detect seven types of eye diseases such as retinal lattice-like degeneration, retinal hiatus, retinal detachment, retinal hemorrhage, glaucoma, hydatid warts, and retinal exudation, with a detection accuracy rate of more than 98%, which can effectively relieve fundus disease examination The lack of medical resources. Because the examination process only takes about 1 minute, this system can also be applied to large-scale crowd eye screening.
Dr. Li Zhonghua, a member of the team, said that the system can monitor the image quality in real time and accurately, and alert the operator in real time to the low quality pictures to guide them to obtain high quality pictures again. If the quality of the pictures taken does not improve more than 3 times, it means that the picture quality is low. It may be caused by turbid interstitial anterior diopter, and referral recommendations will be given automatically.
Assistant researcher Guo Yi, a member of the team, said that there is currently no picture quality monitoring system for ultra-wide area fundus cameras. If the quality of the shooting is different from the requirements of the fundus doctor, it will affect the interpretation of the film, and the doctor usually requires re-shooting, which will cause unnecessary Waste of time and resources. Examination of patients back and forth may delay the diagnosis of the disease and may even lead to medical disputes. The introduction of the "Ultra-wide Area Artificial Fundus Screening System" not only makes clinical diagnosis and treatment more efficient, but also allows patients to get practical Benefits.
"Although the super wide-area fundus photo has sufficient field of vision, accurate interpretation of this fundus image also requires professional training and long-term experience accumulation of ophthalmologists." Lin Haotian said that for lack of professional fundus doctors, medical institutions, physical examination Center, this system can perform fundus screening in the crowd in an efficient and accurate manner, and protect the eye health of the general public.
At present, Lin Haotian's team is negotiating with many domestic and foreign companies on technology transformation issues, with a view to benefiting the broad masses of people as soon as possible.