A free and simple computerized screening test for visual field defects
| Autor: | Sheila J Kerry, Ro Julia Robotham, Jette L. Frederiksen, Valdemar Hennesser Borgen Uhre, Maria Nordfang, Randi Starrfelt |
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| Rok vydání: | 2019 |
| Předmět: |
Male
medicine.medical_specialty genetic structures Intraclass correlation 050109 social psychology Neuropsychological Tests Audiology Sensitivity and Specificity visual field screening 050105 experimental psychology Arts and Humanities (miscellaneous) Developmental and Educational Psychology medicine Criterion validity Humans 0501 psychology and cognitive sciences Neuropsychological assessment General Psychology hemianopia medicine.diagnostic_test 05 social sciences Neuropsychology General Medicine Middle Aged stroke Visual field Test (assessment) Stroke anopia neuropsychological assessment Visual field test Hemianopsia Visual Field Tests Visual Fields Visual angle Psychology |
| Zdroj: | Nordfang, M, Uhre, V, Robotham, R J, Kerry, S J, Frederiksen, J L & Starrfelt, R 2019, ' A free and simple computerized screening test for visual field defects ', Scandinavian Journal of Psychology, vol. 60, no. 4, pp. 289-294 . https://doi.org/10.1111/sjop.12546 |
| ISSN: | 1467-9450 0036-5564 |
| DOI: | 10.1111/sjop.12546 |
| Popis: | About 30-40% of stroke patients suffer from visual field defects following injury. These can interfere with the standard neuropsychological assessment and complicate the interpretation of tests that use visual materials. However, information about the integrity of a patient's central visual field is often unavailable. We, therefore, designed a screening tool, the computerized visual field test (c-VFT), specifically targeted at providing easily available, but rough, information about patients' central visual field. c-VFT was tested in two samples of stroke patients. Eleven patients were tested on c-VFT and on the Esterman test. Five patients were tested on c-VFT and the Humphrey Visual Field Analyzer (HFA), central 10-2. Criterion validity of the c-VFT was investigated by calculating quadrantwise intraclass correlation for both comparisons. For the HFA comparison, we also calculated point-to-point intraclass correlation, sensitivity, and specificity. Analyses revealed moderately good correspondence between c-VFT and the Esterman test, and between c-VFT and HFA 10-2, respectively. When looking specifically at test points within one degree of visual angle apart in the two tests, intraclass correlation increased. For these points, the sensitivity of c-VFT was 0.89 and specificity was 0.97. While the c-VFT is not designed to be diagnostic nor to replace the detailed visual field analysis, this study shows that it provides a reasonable screening of the central visual field. The test can easily be used and will be made freely available to neuropsychological clinicians and researchers.The open access test can be found here: https://tinyurl.com/ysz9b28c |
| Databáze: | OpenAIRE |
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