1. Department of Ophthalmology of the Federal University of Sao Paulo; Sao Paulo Brazil
2. Cornea and Refractive Surgery Department; Hospital de Olhos de Sergipe; Aracaju Brazil
3. Rio de Janeiro Corneal Tomography and Biomechanics Study Group; Rio de Janeiro Brazil
4. Instituto de Olhos Renato Ambrósio and Visare Personal Laser Rio de Janeiro; Rio de Janeiro Brazil