Sökning: "visual acuity"

Visar resultat 1 - 5 av 94 avhandlingar innehållade orden visual acuity.

  1. 1. Bird Vision: Spatial acuity and colour discrimination in bright and dim light

    Detta är en avhandling från Department of Biology, Lund University

    Författare :Olle Lind; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Animal vision; Visual ecology; Colour vision; Spatial acuity; Spatial contrast sensitivity; Dim light; Visual modelling; Behavioural experiments; Birds; Psittaciformes;

    Sammanfattning : Birds use vision to guide navigation, foraging and mate choice, and studies of the limitations in bird visual perception are most helpful for the understanding of bird ecology. Here, I present four studies of bird vision in bright and dim light. LÄS MER

  2. 2. Amblyopia and subnormal visual acuity. Studies of prevalence, assessment and outcome

    Detta är en avhandling från Göteborg

    Författare :Josefin Ohlsson; Göteborgs universitet.; Gothenburg University.; [2003]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Amblyopia; Visual Acuity; Eye Diseases; Epidemiology; Child; Adolescence; Depth Perception; Vision Screening; Treatment Outcome;

    Sammanfattning : Aims. The aims of this thesis were threefold. Firstly, we wanted to establish the distribution of visual acuity (VA) and the prevalence of amblyopia and other ocular disorders in two population-based samples of 12-13-year-old children, one that had been vision-screened at preschool age and the other that had not. LÄS MER

  3. 3. Retinopathy and Visual Acuity in People with Diabetes Mellitus and Hard-to-Heal Diabetic Foot Ulceration

    Detta är en avhandling från Lund University: Faculty of Medicine

    Författare :Anders Sellman; [2019]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hyperbaric oxygen therapy; Diabetic retinopathy; Diabetic foot ulcers; Mortality; Visual acuity;

    Sammanfattning : .... LÄS MER

  4. 4. Vision Beyond the Fovea: Evaluation and Stimuli Properties

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Abinaya Priya Venkataraman; Linda Lundström; Hema Radhakrishnan; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Peripheral vision; Visual optics; Optical correction; Orientation; Stimulus extent; Moving stimulus; Contrast sensitivity; Visual acuity; Central vision loss; Myopia; Biologisk fysik; Biological Physics;

    Sammanfattning : This research is about evaluating vision in the periphery. Peripheral vision is of fundamental importance in the performance of our everyday activities. The aim of this thesis is to develop methods suitable for the evaluation of peripheral vision and to assess how different visual functions vary across the visual field. LÄS MER

  5. 5. Short- and Long-Term Follow-Up of Ophthalmological Findings in Preterm Infants and Children

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Eva Larsson; Gerd Holmström; Kristina Tornqvist; [2004]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Ophtalmology; prematurity; follow-up; retinopathy of prematurity; ROP; infants; children; incidence; screening; refraction; visual acuity; visual fields; Oftalmiatrik; MEDICINE Physiology and pharmacology Ophtalmology; MEDICIN Fysiologi och farmakologi Oftalmologi;

    Sammanfattning : In a prospective population-based study in Stockholm County, 1998-2000, the incidence of retinopathy of prematurity (ROP) was investigated and was found to be 36% in prematurely-born infants with a birth weight of ≤ 1500 grams. Compared to a study performed ten years ago, the overall incidence was unchanged, but was reduced in “mature” infants and increased in immature ones. LÄS MER