1Ophthalmology Unit, Hospital San Juan de Dios, Tenerife, Canary Islands, Spain
2University Institute of Tropical Diseases and Public Health of the Canary Islands, University of La Laguna, Tenerife, Canary Islands, Spain
*Corresponding Author:
Pedro Rocha-Cabrera, Hospital San Juan de Dios, Department of Ophthalmology, Carretera La Cuesta-Taco, S/n 38320 La Laguna (Tenerife), Spain Email: