The first step in developing an International Classification of Functioning, Disability and Health Core Set for Vision Loss: A systematic review

• Published in: Ophthalmic & physiological optics Vol. 44; no. 2; pp. 413 - 425
• Main Authors: Billiet, Lorenzo, Nispen, Ruth M. A., De Baets, Stijn, Vries, Ralph, Van de Velde, Dominique, Aa, Hilde P. A.
• Format: Journal Article
• Language: English
• Published: England Wiley Subscription Services, Inc 01-03-2024
• Subjects: activities; Classification; disability and health; Environmental factors; ICF; ICF Core Set; International Classification of Functioning; participation; Reviews; Systematic review; Vision; vision loss; participation; activities; disability and health; ICF Core Set; vision loss; ICF; International Classification of Functioning
• ISSN: 0275-5408; 1475-1313; 1475-1313
• DOI: 10.1111/opo.13269

Aim
As a first step in developing an International Classification of Functioning, Disability and Health (ICF) Core Set for adults with vision loss, this systematic review sought to identify the researchers' perspective by identifying the most often used outcome measures and research topics obtained from studies on adults with vision loss.
Methods
PubMed, Embase, CINAHL, APA PsycINFO and Web of Science were searched for studies on vision loss. Meaningful outcome measures and research topics were linked to the ICF components: environmental factors, body functions, body structures and the Activities and Participation life domains.
Results
After deduplication, 7219 records remained, of which 2328 articles were eligible for further review. For feasibility reasons, approximately 20% were randomly chosen from every publication year, resulting in 446 included articles. After full‐text reading, 349 articles remained, describing 753 outcome measures based on questionnaires and 2771 additional research topics that could be linked to the ICF. Most were linked to the component Activities and Participation, with a focus on recreation and leisure activities (ICF code d920, 70%), reading (d166, 34%) and driving (d475, 27%). For the component body function, seeing functions (b210, 83%) were most often reported. Outcome measures and research topics were least often linked to the body structure component and environmental factors.
Conclusion
The broad range of ICF categories identified in this systematic review represents the variety of functioning typical for adults with vision loss. These results reflect the focus of researchers over the past 21 years by using various vision‐related outcomes. In our next steps to develop the ICF Core Set for Vision Loss, we will include perspectives of experts and lived experience.