Study to Evaluate the Efficacy of Lagricel® Ofteno PF Compared to Thealoz® Duo After Photorefractive Keratectomy

Inclusion Criteria: * \- Age ≥ 18 and ≤ 45 years old * Being on PRK postoperative day 1 (right eye will be evaluated for efficacy) * Presenting a PRK surgical corneal ablation surface of 5.5 to 6.0 mm * PRK corneal output ≤ 60 µm * Preoperative refraction of -1.0 to -4.5 D of myopia or myopic astigmatism (in this case, the sum of both values with a spherical equivalent no greater than -4.5 D) * Being capable of voluntarily grant a signed informed consent. * Being willing and able to meet the requirements of the study such as attending programmed visits, treatment plan and other study procedures. * Being willing and able to modify the required lifestyle activities. * Women in child-bearing age must assure the continuation (start ≥ 30 days prior to informed consent signing) of a hormonal contraceptive method or intrauterine device (IUD) during the study. Exclusion Criteria: * Having suffered any complications during and after PRK surgical procedure previous to inclusion in the study. * Use of mitomycin during PRK * Being subjected to PRK retreatment of previous history of any other kind of refractive surgery. * Pregnancy, breastfeeding or planning to become pregnant during the time of the study * Having participated in clinical trials within 30 days prior to signing this study's informed consent form. * Having participated previously in this study. * Diagnosis of any of the following: * Allergic, viral or bacterial conjunctivitis * Dry eye * Anterior blepharitis * P…