Résumé
The aim of this real-world registry study was to evaluate the quality-of-life (QoL) impact of dry eye disease (DED). The specific objectives were to determine factors affecting QoL in DED, and to evaluate the psychometric properties of the Ocular Surface Disease Index (OSDI), Ocular Comfort Index (OCI), and Patient Health Questionnaire (PHQ) in a real-world DED population using modern psychometric methods.
This descriptive cross-sectional study included 368 DED patients (mean 54.7 ± 16.6 years; 80.2 % female) who completed one or more of the three questionnaires (OSDI, OCI and PHQ). Psychometric analysis of the QoL data was carried out with Andrich's Rating Scale Model of Rasch analysis.
The original OSDI and OCI had disordered categories. The Rasch-optimised final QoL scales (OSDI – Overall, OSDI – Symptoms [SY], OSDI – Activity limitation [AL], OSDI – Environmental trigger [EN], OCI Overall, OCI - Frequency [FR], OCI - Intensity [IN], and PHQ) had satisfactory psychometric properties. Patients diagnosed with a mixed aqueous/evaporative DED subtype had worse mean OSDI-Overall and OSDI-AL scores than individuals with evaporative DED (p = 0.012 and 0.001 respectively). Patients with corneal neuropathic pain had worse QoL scores (OSDI-Overall, OSDI-AL, OSDI-SY, OSDI-EN, OCI-Overall, OCI-FR, OCI-IN, and PHQ; all p < 0.05) than those without. Patients who reported undergoing prior treatment or procedure for DED had worse QoL scores than those who did not (all p < 0.05 except for PHQ). The associations between DED signs (tear breakup time and staining) and symptoms were weak or not significant.
In this real-world setting, diagnoses of mixed DED, corneal neuropathic pain, and history of DED treatment/procedures were associated with worse dry eye symptoms, activity limitation, and/or QoL.
•Rasch-optimised QoL scales had satisfactory psychometric properties in DED patients.•Raw OSDI and OCI should be validated and optimised before clinical use.•Mixed DED and corneal neuropathic pain were associated with reduced QoL.•Associations between DED signs and symptoms were weak or non-significant.•SSDER provided real-world insights into the impact of DED and treatment benefits.