Pilot, double-masked, vehicle-controlled, randomized, prospective parallel study of 14-day once daily evening (QPM) dosing, followed by 14-day twice daily (BID) dosing of an investigational product (IP), QLS-111, or vehicle as concomitant therapy with monotherapy latanoprost a PGA treatment that is administered QPM. Both eyes (OU) will be dosed. The study is comprised of seven (7) visits and approximately 28 days of IP dosing.