(ANSA) - ROME, FEBRUARY 14 - The Antitrust has launched an investigation into the pharmaceutical companies Roche and Novartis to verify whether they have implemented 'restrictive competition behavior' in the sale of drugs for the treatment of ophthalmic diseases. According to some reports, the two groups agreed to exclude the use in Italy of the drug Avastin, sold by Roche, for the treatment of certain eye diseases common among the elderly, for the benefit of Lucentis of Novartis.