Color.Vision.VingrysAndKingSmith {CVD}

Scoring the results of the "D-15", "D-15DS" or "FM1OO-Hue" tests

Description

Color.Vision.VingrysAndKingSmith takes a vector with cap numbers from the "D-15", "D-15DS" or "FM1OO-Hue" tests and outputs the score by the method from Vingrys and King-Smith.

Usage

Color.Vision.VingrysAndKingSmith(capnumbers=NULL,testType='D-15',silent=TRUE)

Arguments

capnumbers

vector with cap numbers

testType

test type, one of "D-15", "D-15DS" or "FM1OO-Hue"

silent

logical, if TRUE then the function will send output to the screen, similarly to the original version

Value

Angle

confusion angle which identifies the type of color defect

MajRad

major moment of inertia

MinRad

minor moment of inertia

TotErr

error score or estimate of the severity of color defect

Sindex

Selectivity-Index which quantifies the amount of polarity or lack of randomness in a cap arrangement

Cindex

Confusion-Index which quantifies the degree of color loss relative to a perfect arrangement of caps

Author(s)

Jose Gama

References

Vingrys, A.J. and King-Smith, P.E. (1988). A quantitative scoring technique for panel tests of color vision. Investigative Ophthalmology and Visual Science, 29, 50-63.

Examples

Color.Vision.VingrysAndKingSmith(1:15,silent=FALSE)
#result from the original GW Basic version:
#SUMS OF U AND V              41.25999     -4.92
# ANGLE MAJ RAD MIN RAD TOT ERR S-INDEX C-INDEX
#    61.98     9.23     6.71    11.42     1.38     1.00
Color.Vision.VingrysAndKingSmith(1:15,'D-15DS',silent=FALSE)
#result from the original GW Basic version:
#SUMS OF U AND V              26.86001     -38.69
# ANGLE MAJ RAD MIN RAD TOT ERR S-INDEX C-INDEX
#    61.44     5.12     3.60     6.26     1.42     1.00
Color.Vision.VingrysAndKingSmith(1:85, 'FM1OO-Hue',silent=FALSE)
#result from the original GW Basic version:
#SUMS OF U AND V              423.7896      203.7294
# ANGLE MAJ RAD MIN RAD TOT ERR S-INDEX C-INDEX
#    54.15     2.53     1.97     3.20     1.28     1.00