Visual search training in occupational therapy – an example of expert practice in community-based stroke rehabilitation

Turton, Ailie; Angilley, Jayne; Chapman, Marie; Daniel, Anna; Longley, Verity; Clatworthy, Philip; Gilchrist, Iain D.

doi:10.1177/0308022615600180

Cited by 7 publications

(4 citation statements)

References 31 publications

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“…The therapy programme for this study was delivered by two part-time occupational therapy technicians, who were supervised by the research specialist occupational therapist. The intervention guide, written for use in the study, provided direction and examples indicating: how to educate the participant about the effects of their visual problems on ADL performance and the need for compensatory strategies; the use of systematic scanning within the context of meaningful and goal-specific activities; the use of process (or remedial) activities to intensively train search strategies, for example beginning to search a table top or room on the blind side and to systematically search back towards the seeing side; grading difficulty by manipulating distractors and the area of space for the task (Turton et al., 2015). One or two ADL were selected for practice according to the participant’s goals.…”

Section: Methodsmentioning

confidence: 99%

“…Prior to testing the effectiveness of complex interventions, the UK Medical Research Council recommends defining and modelling the intervention and testing its feasibility for delivery (Craig et al., 2008). We previously described an intervention for hemianopia, based on the practice of a specialist community-based occupational therapist (Turton et al., 2015). Using this description, an intervention guide was written giving the rationale for visual search training using valued activities and process activities.…”

Section: Introductionmentioning

confidence: 99%

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Search training for people with visual field loss after stroke: A cohort study

Turton

Angilley

Longley

et al. 2017

British Journal of Occupational Therapy

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BackgroundPeople with visual field loss after stroke often experience difficulties in everyday activities. The purpose of this study was to assess the acceptability of search training as used within occupational therapy and the feasibility of possible measures for use in a future trial. Methods:Nine participants took part in a goal oriented intervention that was delivered three times a week for three weeks. Patient reports of acceptability and outcomes using the Visual Function Questionnaire-25 (VFQ-25) were collected. Participants' room search behaviour before and after the intervention was recorded using a head worn camera. Results:Eight participants completed nine treatment visits. All participants reported improved awareness and attention to the blind side during activities following the intervention. 7/8 participants change scores on VFQ-25 exceeded 6 points. Patterns of head-direction behaviour and overall room search times were variable across patients; markedly improved performance was only evident in the most severely affected participant. Conclusions:The intervention was acceptable. The VFQ-25 is a feasible measure for assessing patient reported outcomes. While the room search was informative about individuals' behaviour, more sophisticated methods of gaze tracking would allow search processes to be determined in real world activities that are relevant to patients' goals.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Search training for people with visual field loss after stroke: A cohort study

Turton

Angilley

Longley

et al. 2017

British Journal of Occupational Therapy

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“…Some adults with visual field impairments (i.e., hemianopia) present with inefficient search strategies as indexed by eye movement recordings, while others develop compensatory search strategies that enable them to perform visual search almost as effectively as adults without visual field impairments (Zihl, 1995). The factors that determine development of compensatory search strategies remain unclear, and cannot be explained simply as a matter of time since or extent of the visual field deficit (Zihl, 1999(Zihl, , 2000 However, the observation that compensatory search strategies can be developed spontaneously has led to the development of visual search training and rehabilitation programmes designed to promote compensatory search strategies in practice (e.g., Turton et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

The Table-top Visual Search Ability Test for children and young people: Normative response time data from typically developing children

Waddington

Pickering

Hodgson

2020

British Journal of Visual Impairment

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Five table-top tasks were developed to test the visual search ability of children and young people in a real-world context, and to assess the transfer of training-related improvements in visual search on computerised tasks to real-world activities. Each task involved searching for a set of target objects among distracting objects on a table-top. Performance on the Table-top Visual Search Ability Test for Children (TVSAT-C) was measured as the time spent searching for targets divided by the number of targets found. A total of 108 typically developing children (3–11 years old) and eight children with vision impairment (7–12 years old) participated in the study. A significant correlation was found between log-transformed age and log-transformed performance ( R2 = .65, p = 4 × 10−26) in our normative sample, indicating a monomial power law relationship between age and performance with an exponent of [Formula: see text], [Formula: see text] We calculated age-dependent percentiles and receiver operating characteristic curve analysis indicated the third percentile as the optimal cut-off for detecting a visual search deficit, giving a specificity of [Formula: see text], [Formula: see text] and sensitivity of [Formula: see text], [Formula: see text] for the test. Further studies are required to calculate measures of reliability and external validity, to confirm sensitivity for visual search deficits, and to investigate the most appropriate response modes for participants with conditions that affect manual dexterity. In addition, more work is needed to assess construct validity where semantic knowledge is required that younger children may not have experience with. We have made the protocol and age-dependent normative data available for those interested in using the test in research or practice, and to illustrate the smooth developmental trajectory of visual search ability during childhood.

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“…However, the observation that compensatory search strategies can be developed spontaneously has led to the development of visual search training and rehabilitation programmes designed to promote compensatory search strategies in practice (e.g. Turton et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

The table-top visual search ability test for children and young people: normative response time data from typically developing children

Waddington¹,

Pickering

Hodgson

2019

Preprint

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AbstractFive table-top tasks were developed to test the visual search ability of children and young people in a real-world context, and to assess the transfer of training related improvements in visual search on computerised tasks to real-world activities. Each task involved searching for a set of target objects among distracting objects on a table-top. Performance on the Table-top Visual Search Ability Test for Children (TVSAT-C) was measured as the time spent searching for targets divided by the number of targets found. 108 typically developing children (3-11 years old) and 8 children with vision impairment (7-12 years old) participated in the study. A significant correlation was found between log-transformed age and log-transformed performance (R2 = 0.65, p = 4 × 10−26) in our normative sample, indicating a monomial power law relationship between age and performance with an exponent of −1.67, 95% CI [−1.90, −1.43]. We calculated age-dependent percentiles and receiver operating characteristic curve analysis indicated the 3rd percentile as the optimal cut-off for detecting a visual search deficit, giving a specificity of 97.2%, 95% CI [92.2%, 99.1%] and sensitivity of 87.5%, 95% CI [52.9%, 97.8%] for the test. Further studies are required to calculate measures of reliability and external validity, to confirm sensitivity for visual search deficits, and to investigate the most appropriate response modes for participants with conditions that affect manual dexterity. Additionally, more work is needed to assess construct validity where semantic knowledge is required that younger children may not have experience with. We have made the protocol and age-dependent normative data available for those interested in using the test in research or practice, and to illustrate the smooth developmental trajectory of visual search ability during childhood.

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Visual search training in occupational therapy – an example of expert practice in community-based stroke rehabilitation

Abstract: General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms

Cited by 7 publications

References 31 publications

Search training for people with visual field loss after stroke: A cohort study

Search training for people with visual field loss after stroke: A cohort study

The Table-top Visual Search Ability Test for children and young people: Normative response time data from typically developing children

The table-top visual search ability test for children and young people: normative response time data from typically developing children

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