McKesson Corporation has signed a definitive agreement to acquire an 80% stake in Prism Vision Holdings from Quad-C for approximately $850 million.

McKesson (MCK) signed a definitive agreement to acquire a controlling interest in PRISM Vision Holdings, LLC, a provider of general

McKesson (NYSE:MCK) has agreed to acquire an 80% controlling interest in PRISM Vision Holdings, an ophthalmology and retina management services provider, from Quad-C for about $850M. PRISM Vision physicians will continue to retain a 20% interest in PRISM Vision.