title: Target Properties Effects on Central versus Peripheral Vertical Fusion Interaction Tested on a 3D Platform.
abstract: We investigated the impact of target properties on vertical fusion amplitude (VFA) using a 3D display platform; the performance of the subjects allowed us to assess how central and peripheral retina regions interact during the fusion process.
  
  
  
  Fourteen subjects were involved in the test. VFA was recorded by varying the viewing distance, target complexity, disparity velocity, lighting condition and background luminance. Base-up prisms were introduced to create vertical disparity in the peripheral retinal area, whereas an offset compensation was added in the central area. Data were analyzed in JMP software using T-test and repeated-measures ANOVA tests.
  
  
  
  VFA is significantly affected by target properties including viewing distance, target complexity and disparity velocity; the impact from lighting condition and background luminance is not significant. Although central retina plays a crucial role in the fusion process, peripheral regions also affect the fusion performance when stimulus size on retina and contents disparity values are modified between central and peripheral vision.
  
  
  
  Vertical fusion is affected by various target properties. For the first time, peripheral vertical disparity direction effects on central fusion and eye motion response have been explored. Besides, a quantitative interaction of central and peripheral fusion is observed, which could be applied in clinical measurement on binocular disease concerning central and peripheral vision conflict.
authors.affiliation: a State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications , Beijing , China.|b Optics Department , Telecom Bretagne , Brest , France.
authors.forename: Di
authors.initials: D
authors.lastname: Zhang
authors.affiliation: c Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge , France.
authors.forename: Pascaline
authors.initials: P
authors.lastname: Neveu
authors.affiliation: b Optics Department , Telecom Bretagne , Brest , France.
authors.forename: Yulia
authors.initials: Y
authors.lastname: Fattakhova
authors.affiliation: b Optics Department , Telecom Bretagne , Brest , France.|d Inserm, UMR 1101 , Brest , France.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Ferragut
authors.affiliation: d Inserm, UMR 1101 , Brest , France.|e University Bretagne Occidentale , Brest , France.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Lamard
authors.affiliation: d Inserm, UMR 1101 , Brest , France.|e University Bretagne Occidentale , Brest , France.|f Service d'Ophtalmologie, CHRU Brest , Brest , France.
authors.forename: Béatrice
authors.initials: B
authors.lastname: Cochener
authors.affiliation: b Optics Department , Telecom Bretagne , Brest , France.
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: de Bougrenet de la Tocnaye
mesh_terms: D000328:Adult; D003290:Convergence, Ocular / Q000502:physiology*; D005260:Female; D064368:Healthy Volunteers; D006801:Humans; D021621:Imaging, Three-Dimensional; D008029:Lighting; D008297:Male; D012160:Retina / Q000502:physiology*; D015357:Vision Disparity / Q000502:physiology*; D014787:Vision Tests / Q000379:methods*; D015348:Vision, Binocular / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*; D055815:Young Adult
keywords: Central fusion; peripheral fusion; prisms; stereo vision; vergence; vertical disparity