Purpose: This study was conducted to demonstrate use of a simple scoring algorithm for the 48-item Veterans Affairs Low Vision Visual Functioning Questionnaire (VA LV VFQ-48) that approximates the measure of persons' visual ability that would be calculated with Rasch analysis and to provide a short form version of the questionnaire for clinical practice and outcomes research.
Methods: Items were eliminated from the VA LV VFQ-48 to reduce redundancy and shorten the instrument. The approximation of persons' visual ability calculated with the scoring algorithm for vision function questionnaires developed by Massof was compared with the person measure estimated from Rasch analysis for a sample of 126 subjects entering a low vision rehabilitation program.
Results: The approximation captures 98% of the variability in the Rasch measure estimate of persons' visual ability and 97% of the variability in the change score estimate. The relationship does not hold in circumstances where patients with high visual ability find most items to be easy. A 20-item short form of the instrument was constructed for use in low vision service delivery.
Conclusions: The scoring algorithm can be used with the VA LV VFQ-48 or short form versions of the questionnaire. Clinicians can use the algorithm to score the VA LV VFQ from examination of individual patients or as an outcome measure for their low vision rehabilitation programs. Research investigators can use the scoring algorithm with small samples when Rasch analysis is not reliable or in studies where Rasch analysis is not practical. Rasch analysis is still recommended for research studies that require more accurate assessments.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/OPX.0b013e3181339f1a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Perfusion estimation from dynamic non-contrast computed tomography using self-supervised learning and a physics-inspired U-net transformer architecture.
Int J Comput Assist Radiol Surg
January 2025
Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA.
Purpose: Pulmonary perfusion imaging is a key lung health indicator with clinical utility as a diagnostic and treatment planning tool. However, current nuclear medicine modalities face challenges like low spatial resolution and long acquisition times which limit clinical utility to non-emergency settings and often placing extra financial burden on the patient. This study introduces a novel deep learning approach to predict perfusion imaging from non-contrast inhale and exhale computed tomography scans (IE-CT).
View Article and Find Full Text PDFNeovascular age-related macular degeneration on three nationwide survey and register data in Finland during 2000-2017.
Acta Ophthalmol
January 2025
Department of Ophthalmology, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Purpose: To evaluate time trends in the incidence and prevalence of neovascular age-related macular degeneration (nAMD) and its treatments, associated factors, and effects on vision in Finland during 2000-2017.
Methods: We used three nationwide health examination surveys representing the Finnish population aged 30 years or older. All three surveys were linked to the national care register covering nAMD diagnoses and intravitreal injections between 2000 and 2017.
Societal costs of decreased visual acuity: A Finnish cohort study with 15 years of registry data follow-up.
Acta Ophthalmol
January 2025
Department of Ophthalmology, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Purpose: To examine what direct and indirect societal costs are associated with decreased visual acuity (VA).
Methods: Nationally representative sample of 8028 Finnish adults aged 30 years or older with survey data and clinical examination including VA assessment was evaluated. These data were linked with multiple national registers to capture health care services utilization during 1999-2013.
Postoperative evaluation of visual and cognitive functions following cataract surgery in patients with age-related cataracts: a prospective longitudinal study.
Front Neurosci
January 2025
Department of Ophthalmology, The Affiliated Hospital, Southwest Medical University, Luzhou, China.
Introduction: Cataracts are associated with a decline in both cognitive and visual functions. This study examines postoperative changes in cognitive and visual functions in patients with age-related cataracts, focusing on the differential effects of unilateral and bilateral cataract surgeries on these functions. Additionally, the study evaluates changes in cognitive function following cataract surgery in individuals with mild cognitive impairment (MCI).
View Article and Find Full Text PDFA Retrospective Analysis of Epidemiological Factors and Surgical Outcomes of Patients With Ocular Trauma at Hospital Kuala Lumpur, Malaysia.
Cureus
December 2024
Department of Ophthalmology, Hospital Universiti Kebangsaan Malaysia, Kuala Lumpur, MYS.
Background The objective of this review is to study the demographics, aetiology, clinical findings, and surgical outcomes of patients who presented with ocular trauma and underwent emergency operations at Hospital Kuala Lumpur, Malaysia. Methods Patients who presented from 2016 to 2023 with ocular trauma and underwent emergency ocular surgery were identified and their medical records were reviewed with respect to demographics, mechanism of injury, type of injury, initial presenting visual acuity and final visual acuity after surgery. Components of the ocular trauma score (OTS) were also recorded.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!