Ophthalmic Quality of Life and Its Association With Visual Function, Accommodative and Binocular Vision Performance in Keratoconus Patients: A Study Using Rasch Analysis

The Persian KORQ is a reliable tool for assessing ophthalmic quality of life in Persian-speaking patients with KCN. The KCN-related AL-S are primarily influenced by age, basic visual functions, and the severity of KCN in the better eye. Deficits in certain binocular vision metrics, particularly a diminished near negative fusional vergence amplitude, may contribute to the symptoms reported by patients with KCN.