Activist investor Jana Partners has reportedly taken a stake in The Cooper Companies (NASDAQ:COO) and is pressing the medical-device maker to evaluate strategic alternatives — including a potential merger between its contact-lens division and Bausch + Lomb (NYSE:BLCO).CooperCompanies approved a $1 billion increase in its share repurchase program to$2 billion in September.Citing people familiar with the matter, the Wall Street Journal reported that Jana's campaign centers on unlocking shareholder value by i ...