title: Peripheral Visual Fields in Children and Young Adults Using Semi-automated Kinetic Perimetry: Feasibility of Testing, Normative Data, and Repeatability.
abstract: Normative visual field area, feasibility and repeatability using (Octopus) semi-automated kinetic perimetry are reported in 221 healthy volunteers aged 5-22 years. I4e and I2e stimuli assessed the visual field at 5°/second (°/s) or 3°/s. Blind spot was assessed with I2e at 2°/s. Reliable visual fields were plotted in 23% of participants <10 years, 64% of 10-12-year-olds, and 98% aged 13-22 years. Visual field areas were unchanged with age using 5°/s, but increased using 3°/s for I2e (p= 0.028). Blind spot area was unchanged with age. Reaction times reduced with age (p< 0.004). There was no learning effect. A test speed of 5°/s is recommended.
authors.affiliation: Academic Unit of Ophthalmology and Orthoptics, Faculty of Medicine, Dentistry and Health, University of Sheffield Sheffield United Kingdom.
authors.forename: Anne
authors.initials: A
authors.lastname: Bjerre
authors.affiliation: Academic Unit of Ophthalmology and Orthoptics, Faculty of Medicine, Dentistry and Health, University of Sheffield Sheffield United Kingdom.
authors.forename: Charlotte
authors.initials: C
authors.lastname: Codina
authors.affiliation: Academic Unit of Ophthalmology and Orthoptics, Faculty of Medicine, Dentistry and Health, University of Sheffield Sheffield United Kingdom.
authors.forename: Helen
authors.initials: H
authors.lastname: Griffiths
keywords: Feasibility; normative peripheral vision; repeatability; semi-automated kinetic perimetry; visual development