Open Access<p>Development and Validation of the “Keratoconus End-Points Assessment Questionnaire” (KEPAQ), a Disease-Specific Instrument for Evaluating Subjective Emotional Distress and Visual Function Through Rasch Analysis</p>
Author(s) -
Kepa Balparda,
Tatiana Herrera-Chalarca,
Laura Andrea Silva-Quintero,
Sneider Alexander Torres-Soto,
Claudia Marcela Vanegas-Ramírez
Publication year - 2020
Publication title -
clinical ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 56
eISSN - 1177-5483
pISSN - 1177-5467
DOI - 10.2147/opth.s254370
Subject(s) - rasch model , keratoconus , medicine , ophthalmology , emotional distress , corneal disease , clinical psychology , optometry , psychiatry , psychology , developmental psychology , cornea , anxiety
Keratoconus is a disease characterized by progressive distortion of the corneal anatomy, coupled with a decrease in vision. Assessing quality of life (QoL) in keratoconus is essential. So far, no instrument in the world has been designed to evaluate both visual function and emotional distress in this population. The purpose of the following study is to develop and validate the "Keratoconus End-Points Assessment Questionnaire" (KEPAQ) in a population of ectatic patients, the very first disease-specific scale to measure emotional latent traits in keratoconus.