Menlo Park, Calif.
Venture capital raised: $78 million
Earlens raised $78 million in Q4 during its later stage of development, according to a MoneyTree report. The company was also one of the top 10 companies that raised the most VC in 2017, raking in $38 million in Q2.
Earlens makes hearing aids that use light and a small lens on the eardrum to activate the body’s natural hearing system. The Earlens devices has a broader frequency range with minimal feedback.