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Femtosecond lasers represent a new frontier in cataract surgery.The most important advantage of femtosecond laser cataract technology is some steps of surgery can be customized and repeatability.The objective is evaluating the clinical efficacy of femtosecond in cataract surgery.Method: Collect a number of eyes with femtosecond laser surgery and another group of traditional cataract surgery.Taking the record of average phacoemulsification power and time or the laser energy.