Markets & Economy Kala Bio Signs Exclusive U.S. Distribution Agreement for Virotek Ophthalmology Genetic Tests September 3, 2026 · 1:47 pm 1 sources Image: Yahoo Finance ad slot · in-content video 16:9 Coverage More coverageKala Bio Signs Exclusive U.S. Distribution Agreement for Virotek Ophthalmology Genetic TestsYahoo Finance · September 3, 2026 13:47