Q-value is a geometrical physical optics term, which reflects the aspheric characteristics of human cornea. Everyone has his own aspherical feature (Q value), which is unique just like a person's fingerprint. Under the conditions of weak light and dark light, Q value will affect the visual quality of human eyes. In the past, because the old equipment didn't have the function of optimizing Q value, during laser myopia surgery, because part of the cornea was removed, the spherical aberration (spherical aberration) was artificially introduced, which changed the Q value and affected the visual quality, resulting in poor visual quality and comfort, especially poor night vision ability, which brought inconvenience to driving at night.
Laser myopia surgery guided by "Q value" is to cut the cornea individually according to the aspheric characteristics of the individual cornea, just like "tailoring" for everyone. The accuracy and effect have developed by leaps and bounds, avoiding the influence of postoperative visual quality. This is very positive for drivers.
Operation advantages: avoid glare and night vision loss.
Practice has proved that the introduction of Q value can make the postoperative corneal shape more in line with the standard state of human eyes. It can not only effectively reduce or even avoid the spherical aberration introduced by refractive surgery, but also correct the original spherical aberration of the cornea through surgery, so that the aspheric personality of the patient's cornea can be reshaped, and the postoperative visual quality is better than that of the previous laser myopia surgery.
Laser myopia surgery guided by "Q value" can also avoid the problems of low visual quality such as glare, decreased vision at night and unclear vision in rainy and foggy days, so that the visual quality at night and in dark light is as good as that during the day, and all-weather perfect vision can be achieved. It's safer to drive at night.
What's more exciting is that the "Q value"-oriented laser myopia surgery is applicable to a wider range of people (50 degrees to 1400 degrees), and the amount of corneal resection is less than that of previous myopia surgery, which not only further improves the safety of surgery, but also opens the door of hope for myopia patients with thin corneas, so that more myopia patients can enjoy myopia correction surgery.
According to reports, "Q-value" surgery is the most advanced excimer laser refractive correction technology in the world, which has achieved a higher level of leap in postoperative effect and surgical safety, representing the new direction of excimer laser myopia correction technology in the next decade, with milestone significance.
Experts in the industry believe that the introduction of Q value can make the postoperative corneal shape more in line with the standard state of human eyes, which is the inevitable direction of the future development of myopia correction.