Safety and Effectiveness of Wavefront-guided LASIK for the Correction of Mixed Astigmatism

Inclusion Criteria:

- At least 18 years of age at the time of pre-operative exam

- Best Spectacle Corrected Visual Acuity (BSCVA) of 20/20 or better

- Demonstration of refractive stability

- Anticipated post-operative stromal bed thickness of at lest 250 microns

- Willing and capable of returning for follow-up examinations for the duration of the
study

Exclusion Criteria:

- Women who are pregnant, breast-feeding, or intend to become pregnant over the course
of the study

- Concurrent use of topical or systemic medications that may impair healing

- History of any medical conditions that could affect wound healing

- History of prior intraocular or corneal surgery, active ophthalmic disease,or other
ocular abnormality

- Evidence of keratoconus, corneal irregularity, or abnormal topography in the
operative eye(s)

- Known sensitivity or inappropriate responsiveness to any of the medications used in
the post-operative course