Search for dissertations about: "Visual Field Tests methods"

Showing result 1 - 5 of 9 swedish dissertations containing the words Visual Field Tests methods.

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

   Author : Josefin Ohlsson; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Amblyopia; Visual Acuity; Eye Diseases; Epidemiology; Child; Adolescence; Depth Perception; Vision Screening; Treatment Outcome;

   Abstract : 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. READ MORE

4. 2. On Reverberation Enhancement in Auditoria

   Author : Peter Svensson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; active sound field control; room acoustics; reverberation enhancement; listening tests; subjective effects; sound-reinforcement; feedback systems; feedback control; computer modelling of acoustics in enclosures; modulation; electro acoustics; time-varying filters;

   Abstract : The analysis of electroacoustic systems for reverberation enhancement in auditoria is the topic of this thesis. Such systems have been developed since the 50's and been commercially available since then as well. During the 80's several new system ideas have been presented but there are still some open questions that are addressed here. READ MORE

5. 3. Visual outcome, ocular findings, and visual processing skills after allogeneic stem cell transplantation in children

   Author : Alba Lucia Törnquist; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Background: Stem cell transplantation (SCT) offers a chance of cure in children with leukaemia and other life-threatening haematological, immunological, and metabolic diseases that do not respond to conventional treatment. Pre and post SCT, these children receive irradiation, and/or chemotherapy and immunosuppressive agents which like the primary disease may adversely affect the eye, the central nervous system as well as the posterior visual pathways and potentially threaten vision. READ MORE

6. 4. The Rarebit fovea test : a new measure of visual function

   Author : Maria Nilsson; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Rarebit Fovea Test; Rarebit Perimetry; foveal function; fixation; diabetes; cataract; binocular summation;

   Abstract : Visual acuity (VA) measurement by the use of letter charts is the most frequently used method for testing foveal function. However, since a decimal visual acuity of 1. READ MORE

7. 5. A Sound Approach Toward a Mobility Aid for Blind and Low-Vision Individuals

   Author : Johan Isaksson-Daun; Avdelningen för Biomedicinsk teknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Audomni; Blindness; Electronic travel aids; Desire of Use; DoU-MoB; DoUQ-MoB; Low vision; Mobility aids; Parrot-VR; Paitient-reported outcome measures; Sonification; Sensory substitution; Sensory supplementation; Virtual environments; Virtual reality; Visual impairment; Audomni; Blindhet; Electronic travel aids; Desire of Use; DoU-MoB; DoUQ-MoB; Kraftig synnedsättning; Förflyttningshjälpmedel; Orienteringshjälpmedel; Parrot-VR; Patient-reported outcome measures; Sonification; Sensory substitution; Sensory supplementation; Virtual environments; Virtual reality; Synnedsättning;

   Abstract : Reduced independent mobility of blind and low-vision individuals (BLVIs) cause considerable societal cost, burden on relatives, and reduced quality of life for the individuals, including increased anxiety, depression symptoms, need of assistance, risk of falls, and mortality. Despite the numerous electronic travel aids proposed since at least the 1940’s, along with ever-advancing technology, the mobility issues persist. READ MORE