Correspondence:      Conflict of Interest:  The authors report no conflicts of interest.  
Juan Ibáñez Alperte, MD, PhD   Contributions:  All authors contributed equally. 
Department of Ophthalmology   Accepted for Publication:  April 1, 2014 
“Lozano Blesa” University Clinic Hospital  This work is licensed under a Creative Commons Attribution 
San Juan Bosco 15, ES-50009 Zaragoza, Spain Non-Commercial 3.0 License (CC BY-NC 3.0). 
Email:  juanibanezalperte@msn.com  ©Copyright Jimenez et al., 2014.   
Phone:  +34 665802084    Licensee Ophthoscience Publishers, USA