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Eyeball tracking may provide you with a small advantage if you're getting laser vision correction. LADARVision uses eyeball tracking to up to -7.00 D of nearsightedness with less than -0.50 D of astigmatism. The LADARWave diagnostic system will determine your lower or higher order aberrations, that is, the degree of your astigmatism or nearsightedness. The VISX system can also detect aberrations higher than the -6.00 diopters of myopic astigmatism the FDA approves. If your results are greater than -6.00, check with your doctor to see which procedures the FDA has approved to treat your vision. LADARVision is approved to treat nearsightedness of up to 8 diopters.
Eye tracking studies have shown improvements six months after eye tracking with the LADARVision vision correction system, although the Bausch and Lomb Zyoptix system provides the most accurate results, with a 30% greater chance of achieving 20/20 vision than if you choose a competitor's technology. In any case, eyeball tracking and mapping will give your laser eye surgeon an edge in correcting your vision, so you need to ask whether your laser eye surgery will involve eye tracking.