title: [Reliability of functional vision assessment in children with low vision from 2 to 6 years old--searching for evidences].
abstract: OBJECTIVE
  The functional vision assessment (AVIF-2 to 6 years) for low vision children with ages from 2 to 6 years old was analyzed. The inter-rater, test-retest and the internal consistency were verified for reliability.
  
  
  METHODS
  The test, composed by seven domains (visual fixation, visual following, visual field confrontation, eye-hand coordination and surrounding locomotion, contrast vision and color vision discrimination), was applied to 40 children, 20 with low vision and 20 without low vision. The inter-rater and test-retest reliability were analyzed with 12 children and the internal consistency with 40 children.
  
  
  RESULTS
  Concerning test-retest reliability, six domains exhibited intra-class correlation coefficients ranging from 0.5361 to 1.000. For the movement within surroundings category, this coefficient was 0.37. For inter-rater reliability, only the category of confrontation visual field was below expectations (0.3901). The weighted kappa coefficient exhibited values ranged from -0.087 to 1.000. Cronbach's alfa ranged from 0.584 (movement within surroundings) to 0.973 (contrast sensitivity).
  
  
  CONCLUSIONS
  AVIF-2 to 6 years presented good reliability indexes, however a few items within the domains need minor adjustments in order to improve scores' consistency of some items.
authors.affiliation: Setor de Baixa Visão Infantil, Hospital São Geraldo, Hospital das Clínicas, Universidade Federal de Minas Gerais - UFMG - Belo Horizonte (MG), Brasil. lucianarossi@ig.com.br
authors.forename: Luciana Drummond de Figueiredo
authors.initials: LD
authors.lastname: Rossi
authors.forename: Galton Carvalho de
authors.initials: GC
authors.lastname: Vasconcelos
authors.forename: Grace Rego
authors.initials: GR
authors.lastname: Saliba
authors.forename: Lívia de Castro
authors.initials: Lde C
authors.lastname: Magalhães
authors.forename: Angela Maria Anselmo
authors.initials: AM
authors.lastname: Soares
authors.forename: Silvia Santiago
authors.initials: SS
authors.lastname: Cordeiro
authors.forename: Regina Helena Caldas de
authors.initials: RH
authors.lastname: Amorim
mesh_terms: D002648:Child; D002675:Child, Preschool; D006801:Humans; D015203:Reproducibility of Results; D015354:Vision, Low; D058609:Visual Field Tests / Q000295:instrumentation*; D014794:Visual Fields