Optrex contact lens eye drops for dry eyes quickly relieve eyes that feel dry or gritty and effectively combat the everyday factors that cause dry eyes from wearing contact lenses to being in artificially cooled or heated environments optrex contact lens eye drops for dry eyes with a long lasting formulation contains specially engineered ingredients that replenish tear deficiency lubricating your eyes up to seven times longer than some others eg hypromellose so you can feel an imme