with the excimer laser for myopia surgery (LASIK) is becoming popular, more and more patients began to choose short-short laser surgery out of wearing glasses, the general treatment of myopia excimer laser surgery (LASIK) can be corrected visual acuity, bid farewell to the spectacle, but the visual Quality requirements are also rising, after glare, night vision capability, such as patients become increasingly concerned about the topic in recent years wavefront-guided LASIK technology, it can be seen as a general LASIK surgery, upgrade Version of the wavefront technology was first used in the field of aviation and space, it can not resolve the general operation of higher-order aberrations can not improve night vision, glare, visual contrast sensitivity, such as declining quality of the short-sightedness Correction into the pursuit of a new stage of visual quality. However, new problems came again. We are all sitting accept pre-operative examination lying down, but an operation, changes in posture, eye position will change the course of eye surgery will be rotating, which will affect the quality of the surgery. There is only one solution, that is, iris positioning technology. At present, on behalf of the myopia of-the-art laser surgery of the international position of the iris of the level of wavefront-guided LASIK technology by the introduction of Wujin People's Hospital of Ophthalmology, will enable patients to achieve the perfect visual quality.
position of the iris in excimer laser surgery in the process of automatic track record. According to the eye in patients with the rotating movement, automatic tracking and compensation for the angle of rotation, from the original three-dimensional XYZ tracking, for the expansion of four-dimensional tracking rotation, for patients with myopia, tailored to further enhance the personalized laser surgery for myopia, astigmatism, The accuracy of hyperopia. Everyone iris texture is different, the world's not repeat the features found in the iris of the case, even if the same person about the characteristics of the iris are also very different. The need for a higher visual quality of patients, the iris position is necessary, iris positioning laser surgery to reduce the short-hand position of the man-made error, so that after the better.
traditional myopic excimer laser surgery to have a hidden, in the course of the operation in the eye, whether conscious or unconscious case of any rotation will be caused by test data in line with the laser treatment of severe error, and all the pre-operative examination did not approach Lying so, when surgery patients have to lie down treatment, patients can not accurately grasp the dynamics of the surplus may be induced aberration, after the visual impact of quality, which means that even if the use of sophisticated wavefront measurement accuracy of the instrument Patients sitting in the eye, but surgery in patients in the supine state, his eyes still occur at an angle of rotation, which is three-dimensional tracking system can not solve the problem. Iris location can be retrieved wavefront analysis of the image of the iris of the eye, to seize the precise location of the iris, made reference to the 48-point calculation of the rotation angle of the eye and depart from the position, compensation has been amended to automatically detect the data exactly, and then rotating laser treatment The direction of fire, so that correction strengthened accuracy, while not selected for vision correction patients. Experience has shown that: an operation for foreigners than for the Chinese people have done more good for an operation. Because most of the foreigner's eyes grow large, light iris color, looks more clear and transparent cornea, the doctor is more easily done, and the Chinese people a relatively small eyes, deep color of the iris, if the clinical experience of the poor doctor to do very Effort. That is why we are finding more little-known secret: Chinese people prefer eye surgery rotation. China eyes were spinning, though not a large degree, but the rotation is still very large proportion, more than 4 degrees were close to 70%. Moreover, the Chinese people's eyes light of the relatively high sensitivity, lying on the bed operation, the pupil center will shrink as a result of muscle tension and displacement occurs, the displacement of more than 0.4 millimeters or about 80%. Before and after eye surgery as a result of spin and shift makes the computer to determine the location of the laser dot shift occurred, affecting the operation of the wavefront stability, can improve the visual, to a large extent, depend on luck . All through the iris positioning technology to track the location of the rotation angle of the eye to resolve.