Important areas of the central binocular visual field for daily functioning in the visually impaired

• Published in: Ophthalmic & physiological optics 2012-03, Vol.32 (2), p.156-163
• Main Authors: Tabrett, Daryl R, Latham, Keziah
• Format: Article
• Language: English
• Subjects: Activities of Daily Living; Adult; Aged; Aged, 80 and over; Binocular vision; Biological and medical sciences; Eye and associated structures. Visual pathways and centers. Vision; Fundamental and applied biological sciences. Psychology; Humans; Inventories; Language; Mathematical models; Medical sciences; Middle Aged; Mobility; Mobility Limitation; Multivariate analysis; Ophthalmology; Optics; patient reported outcome measure; rasch analysis; Reading; self-report; Sensory Thresholds - physiology; Vertebrates: nervous system and sense organs; Vision; Vision Disorders - physiopathology; Vision Disorders - psychology; Vision Disorders - rehabilitation; Vision, Binocular - physiology; visual field; Visual Field Tests - methods; Visual Fields - physiology; visual impairment; Visual Perception - physiology; Visual thresholds
• ISSN: 0275-5408; 1475-1313
• DOI: 10.1111/j.1475-1313.2012.00892.x

Citation information: Tabrett DR & Latham K. Important areas of the central binocular visual field for daily functioning in the visually impaired. Ophthalmic Physiol Opt 2012, 32, 156–163. doi: 10.1111/j.1475‐1313.2012.00892.x Purpose:  To determine the areas of the central binocular visual field which correspond best with self‐reported vision related activity limitations (VRAL) in individuals with visual impairment using a clinically relevant and accessible technique. Methods:  One hundred participants with mixed visual impairment undertook binocular threshold visual field testing using a Humphrey 30‐2 SITA Fast program. The Activity Inventory (AI) was administered to assess overall, mobility related and reading related self‐reported VRAL as part of a face‐to‐face clinical interview. Different eccentricities of the binocular field (central 5, 5–10, and 10–30°) were compared to self‐reported VRAL in bivariate analyses and further explored using multivariate analyses. Results:  All areas of the binocular visual field were significantly associated with self‐reported VRAL in bivariate analyses, with greater field loss associated with increased VRAL (p