A Prospective Safety and Effectiveness Study of a New High Repetition Rate Excimer Laser Using LASIK for the Correction of Ammetropia and Presbyopia

Inclusion Criteria: * Subjects have to be at least 18 years of age. * Subjects have to be able to read, understand, and sign a statement of Informed Consent (be given a copy of the signed Informed Consent Form (ICF). * Subjects have to be willing and able to return for scheduled follow-up examinations for up to 6 respectively 12 months after surgery. * For Proscan and Zyoptix Treatments the myopic subjects require a sphere between -0.5 D up to a maximum sphere of -10.0 D. If the patient has a refractive astigmatism to be treated, this must be between -0.5 D up to -4.0 D (not corneal astigmatism) as expressed in spectacle minus cylinder form (by manifest subjective refraction). Overall the SE for myopes must be no more than -12.0 D. * The Hyperopic subjects require a sphere between +0.5 D up to a maximum sphere of +4.0 D. If the patient has a refractive astigmatism to be treated, this must be between +0.5 D up to +4.0 D (not corneal astigmatism) as expressed in spectacle plus cylinder form (by manifest subjective refraction). Overall the SE for hyperopes must be no more than +6.0 D. * Subjects who are contact lens wearers must have gas permeable lenses discontinued for at least 3 weeks and soft lenses discontinued for at least 1 week prior to the pre-operative evaluation in the eye to be treated. * Corneal topography should be qualified. * Subjects who are contact lens wearers must have two (2) central keratometry readings and two (2) manifest subjective refractions taken pre…