Next-generation vision testing: the quick CSF
The Contrast Sensitivity Function relates the spatial frequency and contrast of a spatial pattern to its visibility and thus provides a fundamental description of visual function. However, the current clinical standard of care typically restricts assessment to visual acuity, i.e. the smallest stimul...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2015-09-01
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| Series: | Current Directions in Biomedical Engineering |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/cdbme.2015.1.issue-1/cdbme-2015-0034/cdbme-2015-0034.xml?format=INT |
| _version_ | 1818906442667655168 |
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| author | Dorr Michael Wille Manuel Viulet Tiberiu Sanchez Edward Bex Peter J Lu Zhong-Lin Lesmes Luis |
| author_facet | Dorr Michael Wille Manuel Viulet Tiberiu Sanchez Edward Bex Peter J Lu Zhong-Lin Lesmes Luis |
| author_sort | Dorr Michael |
| collection | DOAJ |
| description | The Contrast Sensitivity Function relates the spatial frequency and contrast of a spatial pattern to its visibility and thus provides a fundamental description of visual function. However, the current clinical standard of care typically restricts assessment to visual acuity, i.e. the smallest stimulus size that can be resolved at full contrast; alternatively, tests of contrast sensitivity are typically restricted to assessment of the lowest visible contrast for a fixed letter size. This restriction to one-dimensional subspaces of a two-dimensional space was necessary when stimuli were printed on paper charts and simple scoring rules were applied manually. More recently, however, computerized testing and electronic screens have enabled more flexible stimulus displays and more complex test algorithms. For example, the quick CSF method uses a Bayesian adaptive procedure and an information maximization criterion to select only informative stimuli; testing times to precisely estimate the whole contrast sensitivity function are reduced to 2-5 minutes. Here, we describe the implementation of the quick CSF method in a medical device. We make several usability enhancements to make it suitable for use in clinical settings. A first usability study shows excellent results, with a mean System Usability Scale score of 86.5. |
| first_indexed | 2024-12-19T21:39:18Z |
| format | Article |
| id | doaj.art-accff4025dad4e6c8f769a9976fdeba7 |
| institution | Directory Open Access Journal |
| issn | 2364-5504 |
| language | English |
| last_indexed | 2024-12-19T21:39:18Z |
| publishDate | 2015-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Current Directions in Biomedical Engineering |
| spelling | doaj.art-accff4025dad4e6c8f769a9976fdeba72022-12-21T20:04:42ZengDe GruyterCurrent Directions in Biomedical Engineering2364-55042015-09-011113113410.1515/cdbme-2015-0034cdbme-2015-0034Next-generation vision testing: the quick CSFDorr Michael0Wille Manuel1Viulet Tiberiu2Sanchez Edward3Bex Peter J4Lu Zhong-Lin5Lesmes Luis6Adaptive Sensory Technology GmbH, Maria-Goeppert-Str. 1, 23562 Lübeck, GermanyAdaptive Sensory Technology GmbH, Maria-Goeppert-Str. 1, 23562 Lübeck, GermanyAdaptive Sensory Technology GmbH, Maria-Goeppert-Str. 1, 23562 Lübeck, GermanyAdaptive Sensory Technology, 225 Friend St, 02114 Boston, MA, USAAdaptive Sensory Technology, 225 Friend St, 02114 Boston, MA, USAAdaptive Sensory Technology, 225 Friend St, 02114 Boston, MA, USAAdaptive Sensory Technology, 225 Friend St, 02114 Boston, MA, USAThe Contrast Sensitivity Function relates the spatial frequency and contrast of a spatial pattern to its visibility and thus provides a fundamental description of visual function. However, the current clinical standard of care typically restricts assessment to visual acuity, i.e. the smallest stimulus size that can be resolved at full contrast; alternatively, tests of contrast sensitivity are typically restricted to assessment of the lowest visible contrast for a fixed letter size. This restriction to one-dimensional subspaces of a two-dimensional space was necessary when stimuli were printed on paper charts and simple scoring rules were applied manually. More recently, however, computerized testing and electronic screens have enabled more flexible stimulus displays and more complex test algorithms. For example, the quick CSF method uses a Bayesian adaptive procedure and an information maximization criterion to select only informative stimuli; testing times to precisely estimate the whole contrast sensitivity function are reduced to 2-5 minutes. Here, we describe the implementation of the quick CSF method in a medical device. We make several usability enhancements to make it suitable for use in clinical settings. A first usability study shows excellent results, with a mean System Usability Scale score of 86.5.http://www.degruyter.com/view/j/cdbme.2015.1.issue-1/cdbme-2015-0034/cdbme-2015-0034.xml?format=INTvisioncontrast sensitivity functionadaptive methods |
| spellingShingle | Dorr Michael Wille Manuel Viulet Tiberiu Sanchez Edward Bex Peter J Lu Zhong-Lin Lesmes Luis Next-generation vision testing: the quick CSF Current Directions in Biomedical Engineering vision contrast sensitivity function adaptive methods |
| title | Next-generation vision testing: the quick CSF |
| title_full | Next-generation vision testing: the quick CSF |
| title_fullStr | Next-generation vision testing: the quick CSF |
| title_full_unstemmed | Next-generation vision testing: the quick CSF |
| title_short | Next-generation vision testing: the quick CSF |
| title_sort | next generation vision testing the quick csf |
| topic | vision contrast sensitivity function adaptive methods |
| url | http://www.degruyter.com/view/j/cdbme.2015.1.issue-1/cdbme-2015-0034/cdbme-2015-0034.xml?format=INT |
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