Tesseract Health Inc. has closed an oversubscribed series B financing, reeling in $80 million with support from Foresite Capital, Glenview Capital and Opaleye. The proceeds will be used to advance the company’s Tesseract Ic eye-imaging diagnostic technology platform, including U.S. and overseas regulatory clearances. This is the first independent financing round for the Guilford, Conn.-based startup, which is developing a platform capable of diagnosing a range of diseases without a single blood draw. The company received prior seed funding as part of the 4Catalyzer med-tech incubator.