Insamian, W.; Thitapanyo, P. M.; (Sukanya Aruno), P. S. The Development of The Quality of Life of The Visually Impaired According to The 4 Prayers of The Khao Suan Kwang Association for the Blind, Khao Suan Kwang District, Khon Kaen Province. jmhs1_s 2021, 4, 399-416.