A Prospective, Multi-Center Evaluation of Corneal Flap Creation Using Cheetah Femtosecond Laser System and Cheetah Patient Interface

This study is a 3-month, prospective, multicenter, open-label, comparative, randomized (1:1 ratio for right and left eyes) study. The study will be conducted at up to 5 sites and up to 300 treated subjects to achieve minimum 40 eyes with optimized settings and additional eye data for further device experience. Both eyes of each subject will be treated. The investigator will use the Cheetah femtosecond laser, with the following possible procedures performed: A comparison of commercial iFS femtosecond laser and PI in one eye and the Cheetah femtosecond laser (with the two piece PI) on the other eye. The eye treated with the Cheetah femtosecond laser will be the study eye and the eye treated with the commercial iFS femtosecond laser will be the control eye. All procedures will be performed to create a LASIK flap on subjects' corneas. Flap parameters (such as flap depth, flap diameter, and hinge angle) should be the same for both eyes. The study eye will be randomized (ratio of 1:1 for right eye and left eye). Subjects will undergo refractive correction via corneal ablation on both eyes using a commercial excimer laser for vision correction (same excimer laser system shall be used on both eyes). Over the course of the study, minor prototype device settings/improvements (with no safety implications and without compromising the clinical validity of the study) may be performed to optimize the quality of flap.