Aliso Viejo-based LenSx Lasers, a developer of laser technology used for cataract surgery, has been acquired by Alcon, Alcon said late Tuesday. According to Alcon, it will pay $361.5M in cash for LenSx shareholders, plus up to $382.5M in contingent payments based on milestones and revenues. LenSx is backed by Versant Ventures, SV Life Sciences, InterWest Partners and Venture Investors.