CSO is an International leader in diagnostic ophthalmic instruments since more than fifty years. Since when it was born, the company has grown and, thanks to the wise leadership of its founders Mr. Sergio Mura and Mr. Giuseppe Matteuzzi, it conquered wider markets up to become an undisputed leader. CSO has recently enlarged its plant with new production lines and by increasing the R&D sector with new engineers and software developers. Thanks to an efficient and diffused team of coworkers and salesmen, CSO has become a strong player in the international market. Today CSO has some very innovative products, such as COBRA+, a new fundus camera with amazing specifics and very easy to use; SIRIUS System is a combination of a Scheimpflug camera together with a corneal topographer and it represents the forefront of corneal tomography. All the slit lamps and the endothelium microscope PERSEUS have been completely renewed by using a LED source. Recently the new aberrometer OSIRIS has been launched; it works with the PWS technology and its specifications are really competitive. The new OCT MS-39, and it confirms the very high technological level of the CSO diagnostic production. New refraction units, made with new materials, enrich CSO portfolio together with a wide range of chairs and chest of drawers. CSO Quality System is certified in accordance with the ISO9001 and ISO13485 standard. The quality of our processes has been certified by CSQ. The aptitude to the technology research, the smartness of a well-known “made in Italy” style, the reliability and the efficiency of the productive process, the highly trained staff, the high quality level of products and the maximum care for custom safety summarize the production philosophy of CSO and they are at the root of its big success.