Study of SAF312 as an Eye Drop for Treatment of Eye Pain Following Photorefractive Keratectomy (PRK) Surgery

Inclusion Criteria: * Normal eye exam except for refractive error at baseline. * Myopia should not exceed -4.00 Diopters (sphere) and 3.00 diopters of astigmatism, with spherical equivalent not higher than -4.50, confirmed by manifest refraction at baseline. Exclusion Criteria: * Monocular patient (including amblyopia) or best corrected visual acuity score worse than 20/80 (Snellen) or 55 letters (EDTRS), at baseline. * Any systemic or ocular disease that might affect wound healing (such as severe rheumatoid arthritis or diabetes or history of keloid formation) or a history of ocular trauma, uveitis, infection, or inflammation in the 6 months prior to baseline. * Previous refractive or corneal surgery (such as LASIK, PRK, radial keratotomy, pterygium removal, corneal transplantation). * Chronic pain of any etiology or any significant illness which has not resolved within two (2) weeks prior to initial dosing. Other inclusion and exclusion criteria apply.