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Living with Ultra-Low Vision: An Inventory of Self-Reported Visually Guided Activities by Individuals with Profound Visual Impairment.
Adeyemo, Olukemi; Jeter, Pamela E; Rozanski, Collin; Arnold, Ellen; Dalvin, Lauren A; Swenor, Bonnielin; Dagnelie, Gislin.
Afiliación
  • Adeyemo O; Lions Vision Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
  • Jeter PE; Lions Vision Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
  • Rozanski C; Lions Vision Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
  • Arnold E; Katzen Eye Group, Baltimore, MD, USA.
  • Dalvin LA; Department of Ophthalmology, Mayo Clinic, Rochester, MN, USA.
  • Swenor B; Lions Vision Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
  • Dagnelie G; Lions Vision Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Transl Vis Sci Technol ; 6(3): 10, 2017 May.
Article en En | MEDLINE | ID: mdl-28573074
PURPOSE: To understand how individuals with profound visual impairment (ultra-low vision, ULV) use their remaining vision. METHODS: Forty-six participants with ULV (visual acuity ≤ 200/500 in the better seeing eye) were divided into nine focus groups (4-6 individuals per group) and met either in person (n = 2) or over the phone (n = 7). Discussions were guided by the Massof Activity Inventory. Audio recordings were transcribed and analyzed for visual activities that were then classified along two visual categorizations - functional domains and visual aspects. The latter was based on a Grounded Theory classification of participants' descriptions. RESULTS: Seven hundred sixty activities were reported. By functional domain they were classified as reading/shape recognition (10%), mobility (17%), visual motor (24%), and visual information gathering (49%). By visual aspects, they were classified as contrast (43%), luminance (17%), environmental lighting (9%), familiarity (3%), motion perception (5%), distance (7%), size (9%), eccentricity (5%), depth perception (1%), and other/miscellaneous (1%). More than one visual aspect may be critical for an activity: participants reported that contrast plays a role in 68% of visual activities, followed by luminance (27%), environmental lighting (14%), and size (14%). CONCLUSIONS: Visual aspects, primarily contrast, were found to be critical factors enabling ULV individuals to perform visual activities. TRANSLATIONAL RELEVANCE: This inventory, part of the Prosthetic Low Vision Rehabilitation (PLoVR) curriculum development study, provides a unique perspective into the visual world of the nearly blind, and can be used in the development of a Visual Functioning Questionnaire (VFQ) and visual performance measures suited for ULV populations.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Qualitative_research Aspecto: Patient_preference Idioma: En Revista: Transl Vis Sci Technol Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Qualitative_research Aspecto: Patient_preference Idioma: En Revista: Transl Vis Sci Technol Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos