The Brazilian version of the 25-Item National Eye Institute Visual Function Questionnaire: translation, reliability and validity

Abstract

Purpose: To develop and investigate the reliability and validity of a Brazilian version of the 25-Item National Eye Institute Visual Function Questionnaire. Methods: A Brazilian version of the questionnaire was developed and applied to patients with chronic eye diseases and healthy controls. Reliability was assessed by Cronbach's alpha coefficient, intraclass correlation coefficient and interrater reliability coefficient. Participants were submitted to the Medical Outcomes Study Short Form-36 Questionnaire. Validity was estimated by the correlation between the questionnaires and among the 12 subscales of the questionnaire, subscales scores and visual acuity, patients' and controls' subscales scores, and the factor analysis. Responsiveness of the questionnaire was assessed in a group of patients before and following cataract surgery. Results: Cronbach's alpha, intraclass correlation and interrater reliability coefficients were highly significant. Validity was well established in all tests. In patients who underwent cataract surgery, a better visionrelated quality of life was observed following surgery. Conclusion: The Brazilian version of the 25-Item National Eye Institute Visual Function Questionnaire has valid and reliable psychometric properties and can be applied to vision-related quality of life research. ABSTRACT INTRODUCTION

Vision Related Quality of Life in Patients with Keratoconus

“…They have been validated by a variety of studies showing they are useful tools in assessing vision-specific quality of life [4–8]. NEI VFQ-25 is demonstrated to be sensitive to the influence of age related macular degeneration (AMD) [9, 10], glaucomatous field loss [11], cataract [12], Behcet uveitis [13], after penetrating keratoplasty for keratoconus [14], after retinal detachment surgery [15], vitrectomy [16], diabetic retinopathy [17], strabismus [18], multiple sclerosis [19], osteoporotic fractures, and low vision from any cause [20].…”

Qualidade de vida em portadores de glaucoma: comparação entre pacientes do sistema público de saúde e clínica privada

“…No Brasil este questionário vem sendo utilizado desde 2001, tendo a sua consistência interna e reprodutibilidade teste-reteste demonstradas, estando validado e disponível para a língua portuguesa (13)(14) . Dados da literatura sugerem que algumas condições podem interferir na qualidade de vida de portadores de glaucoma como a idade, campo visual, acuidade visual e o nível educacional (15)(16)(17)(18)(19) .…”

Ophthalmologic manifestations commonly misdiagnosed as demyelinating events in multiple sclerosis patients

“…Such cases urge a prompt ophthalmological approach for diagnosis and possible surgical treatment. It is well established that patients improve vision and quality of life following cataract surgery and this may also happen to MS patients [11].…”