Vision 20 Reviews (Zenith Labs) Legit Customer Testimonials or Side Effects Complaints? Zenith Labs Vision 20 reviews. Does the Vision 20 supplement by Dr. Ryan Shelton really work or negative consumer reports? Report by FitLivings. April 23, 2021 20:15 ET | Source: FitLivings Reviews FitLivings Reviews Long Island, New York New York City, NY , April 23, 2021 (GLOBE NEWSWIRE) -- Vision 20 Reviews 2021 Update: Zenith Labs Vision 20 pills really work to improve eyesight? Vision 20 by Zenith Labs is a natural formula that promotes healthy eye functions. It is designed by Dr. Ryan Shelton, who has years-long experience in repairing eyesight in his patients. According to its official website, it contains ten essential nutrients that are required to eradicate all possible issues for eyes supporting a clearer vision.