Abstract
Purpose. To determine the agreement between the Humphrey Matrix perimeter 10-2 test and the 10-2 Humphrey Field Analyzer (HFA) test when assessing visual function in patients with age-related macular degeneration (AMD). Methods. Forty-two eyes of 42 subjects with AMD (average 75.0 years, SD = 6.2: median visual acuity in logarithm of the minimum angle of resolution of 0.26, range, -0.12 to 1.04) were evaluated with the Matrix and HFA 10-2 visual field tests. Mean deviation (MD), pattern standard deviation, and test time were recorded. We calculated spatial concordance of individual test locations, being the proportion of spatially agreeing locations with identical classification (normal vs. abnormal, p < 5%) on the pattern deviation plot. As multiple HFA stimuli overlapped with some Matrix locations, several criteria for grouping HFA data into locations were investigated. Results. Both MD and pattern standard deviation were significantly correlated for the two devices (r2 = 0.79 and r2 = 0.80, respectively, p < 0.0001). Using our standard criterion for abnormal HFA locations (≥50% stimuli abnormal), the median spatial concordance was 0.76, with 95% of tests giving a concordance of ≥0.59. A small, but significant, increase in concordance occurred when a stricter criterion (all stimuli abnormal at a location) was applied. Median fixation loss percentages were 7 and 0% for the HFA and Matrix, respectively. Visual acuity in logarithm of the minimum angle of resolution showed modest correlations with both defect depth (HFA MD: r2 = 0.39, p < 0.0001) and size of defect (number of abnormal points on the HFA: r2 = 0.24, p < 0.0001). Conclusions. Using a simple metric to calculate spatial concordance, the Matrix 10-2 test quantifies the spatial extent of significant depression of the central visual fields in AMD in a manner similar to the HFA 10-2. The spatial extent and depth of central visual field loss in AMD are only modestly predicted by visual acuity measurements.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 806-815 |
| Number of pages | 10 |
| Journal | Optometry and Vision Science |
| Volume | 88 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2011 |
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Keywords
- age-related macular degeneration
- automated perimetry
- contrast
- frequency doubling
- psychophysics
- visual acuity
- visual field
ASJC Scopus subject areas
- Ophthalmology
- Optometry
- Medicine(all)
Cite this
Measuring visual function in age-related macular degeneration with frequency-doubling (matrix) perimetry. / Anderson, Andrew John; Johnson, Chris A.; Werner, John S.
In: Optometry and Vision Science, Vol. 88, No. 7, 07.2011, p. 806-815.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Measuring visual function in age-related macular degeneration with frequency-doubling (matrix) perimetry
AU - Anderson, Andrew John
AU - Johnson, Chris A.
AU - Werner, John S
PY - 2011/7
Y1 - 2011/7
N2 - Purpose. To determine the agreement between the Humphrey Matrix perimeter 10-2 test and the 10-2 Humphrey Field Analyzer (HFA) test when assessing visual function in patients with age-related macular degeneration (AMD). Methods. Forty-two eyes of 42 subjects with AMD (average 75.0 years, SD = 6.2: median visual acuity in logarithm of the minimum angle of resolution of 0.26, range, -0.12 to 1.04) were evaluated with the Matrix and HFA 10-2 visual field tests. Mean deviation (MD), pattern standard deviation, and test time were recorded. We calculated spatial concordance of individual test locations, being the proportion of spatially agreeing locations with identical classification (normal vs. abnormal, p < 5%) on the pattern deviation plot. As multiple HFA stimuli overlapped with some Matrix locations, several criteria for grouping HFA data into locations were investigated. Results. Both MD and pattern standard deviation were significantly correlated for the two devices (r2 = 0.79 and r2 = 0.80, respectively, p < 0.0001). Using our standard criterion for abnormal HFA locations (≥50% stimuli abnormal), the median spatial concordance was 0.76, with 95% of tests giving a concordance of ≥0.59. A small, but significant, increase in concordance occurred when a stricter criterion (all stimuli abnormal at a location) was applied. Median fixation loss percentages were 7 and 0% for the HFA and Matrix, respectively. Visual acuity in logarithm of the minimum angle of resolution showed modest correlations with both defect depth (HFA MD: r2 = 0.39, p < 0.0001) and size of defect (number of abnormal points on the HFA: r2 = 0.24, p < 0.0001). Conclusions. Using a simple metric to calculate spatial concordance, the Matrix 10-2 test quantifies the spatial extent of significant depression of the central visual fields in AMD in a manner similar to the HFA 10-2. The spatial extent and depth of central visual field loss in AMD are only modestly predicted by visual acuity measurements.
AB - Purpose. To determine the agreement between the Humphrey Matrix perimeter 10-2 test and the 10-2 Humphrey Field Analyzer (HFA) test when assessing visual function in patients with age-related macular degeneration (AMD). Methods. Forty-two eyes of 42 subjects with AMD (average 75.0 years, SD = 6.2: median visual acuity in logarithm of the minimum angle of resolution of 0.26, range, -0.12 to 1.04) were evaluated with the Matrix and HFA 10-2 visual field tests. Mean deviation (MD), pattern standard deviation, and test time were recorded. We calculated spatial concordance of individual test locations, being the proportion of spatially agreeing locations with identical classification (normal vs. abnormal, p < 5%) on the pattern deviation plot. As multiple HFA stimuli overlapped with some Matrix locations, several criteria for grouping HFA data into locations were investigated. Results. Both MD and pattern standard deviation were significantly correlated for the two devices (r2 = 0.79 and r2 = 0.80, respectively, p < 0.0001). Using our standard criterion for abnormal HFA locations (≥50% stimuli abnormal), the median spatial concordance was 0.76, with 95% of tests giving a concordance of ≥0.59. A small, but significant, increase in concordance occurred when a stricter criterion (all stimuli abnormal at a location) was applied. Median fixation loss percentages were 7 and 0% for the HFA and Matrix, respectively. Visual acuity in logarithm of the minimum angle of resolution showed modest correlations with both defect depth (HFA MD: r2 = 0.39, p < 0.0001) and size of defect (number of abnormal points on the HFA: r2 = 0.24, p < 0.0001). Conclusions. Using a simple metric to calculate spatial concordance, the Matrix 10-2 test quantifies the spatial extent of significant depression of the central visual fields in AMD in a manner similar to the HFA 10-2. The spatial extent and depth of central visual field loss in AMD are only modestly predicted by visual acuity measurements.
KW - age-related macular degeneration
KW - automated perimetry
KW - contrast
KW - frequency doubling
KW - psychophysics
KW - visual acuity
KW - visual field
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UR - http://www.scopus.com/inward/citedby.url?scp=79960364554&partnerID=8YFLogxK
U2 - 10.1097/OPX.0b013e31821861bd
DO - 10.1097/OPX.0b013e31821861bd
M3 - Article
C2 - 21478785
AN - SCOPUS:79960364554
VL - 88
SP - 806
EP - 815
JO - Optometry and Vision Science
JF - Optometry and Vision Science
SN - 1040-5488
IS - 7
ER -