height
variance
linear regression analysis
development
field indices
probability maps
2022-05-10T10:36
computerized visual field
visual field indices
chapter
We have devised a package for the statistical analysis of computerized visual fields. It is based on a new mathematical model of the normal visual field and intended to facilitate interpretation of single fields and to illustrate changes over time in consecutive threshold fields. Single field analyses include maps showing pointwise total and pattern deviations from the age-corrected normal reference field. These maps are displayed both numerically, in dB, and as noninterpolated greyscaled probability maps illustrating the statistical significance of measured deviations. These probability maps help emphasize shallow, but significant, depressions in the paracentral field while frequently occurring false positive deviations occurring in the midperiphery are de-emphasized. Visual field indices, summarizing the deviations of height (Mean Deviation) and shape (Pattern Standard Deviation and Corrected Pattern Standard Deviation) of the measured field are weighted according to the normal variance among healthy individuals and printed out together with level of statistical significance. For follow-up the programme contains several different options. These range from an Overview format where threshold printouts and probability maps from several tests are printed in reduced size, but without any reduction of data, on a single sheet of paper, to a box plot format where the development of the field is shown with an intermediate degree of data reduction and a format employing a high degree of data reduction: graphs over visual field indices over time. If five or more tests are available a linear regression analysis of Mean Deviation is automatically performed. The programme will become available in the Humphrey Field Analyzer.
field
levels
statistical significance
deviation of height
test
program
analysis
intermediate degree
A package for the statistical analysis of visual fields
individuals
1987
153-168
more tests
normal visual fields
data
positive deviation
Humphrey Field Analyzer
false
sheets
analyzer
high degree
normal variance
visual field
chapters
model
healthy individuals
field analysis
index
degree
mathematical model
reduction of data
time
threshold field
significance
statistical analysis
total
reference field
paper
different options
https://scigraph.springernature.com/explorer/license/
options
reduced size
regression analysis
new mathematical model
size
en
format
reduction
paracentral field
plot format
maps
printouts
changes
1987-01-01
shape
https://doi.org/10.1007/978-94-009-3325-5_23
data reduction
depression
single-field analysis
Field Analyzer
midperiphery
single sheet
interpretation
package
single field
mean deviation
pattern deviation
deviation
Statistics
Anders
Heijl
Lindgren
Georg
Heijl
A.
Springer Nature
Mathematical Sciences
Olsson
Jonny
Greve
E. L.
pub.1016118418
dimensions_id
Springer Nature - SN SciGraph project
Department of Mathematical Statistics, Box 118, S 221 00, Lund, Sweden
Department of Mathematical Statistics, Box 118, S 221 00, Lund, Sweden
Department of Ophthalmology, Malmö General Hospital, S-214 01, Malmö, Sweden
Department of Ophthalmology, Malmö General Hospital, S-214 01, Malmö, Sweden
978-94-009-3325-5
Seventh International Visual Field Symposium, Amsterdam, September 1986
978-94-010-7993-8
doi
10.1007/978-94-009-3325-5_23