The notion of using vacuum pressure on the anterior portion of the human eye as a treatment for open-angle glaucoma might be a clinical novelty, but Balance Ophthalmics Inc. is poised to change that. The company recently won a favorable outcome at a U.S. FDA advisory panel for its Fsyx negative pressure pump for ocular use, although the company is likely to have to drum up a large body of data in post-approval studies, assuming the FDA gives the Fsyx the nod.