Objective: Leprosy is a chronic infectious disease caused by Mycobacterium leprae, which has a high incidence of ocular involvement. Due to the need for good vision for leprosy patients, visual acuity becomes an essential early screening examination. The Snellen Chart has been commonly employed as the standard for measuring visual acuity. Nevertheless, it is immobile and time-consuming. A smartphone-based application, Portable Eye Examination Kit (Peek Acuity), is already known to be