visualFields (version 0.2-4)

vfiperc: percentiles for visual field index

Description

gets the percentiles for visual field index

Usage

vfiperc( vals, percentiles = c( 0.5, 1, 2, 5, 95 ),
         type = c( "quantile", "(i-1)/(n-1)", "i/(n+1)", "i/n" ) )

Arguments

vals

vf-object with vfi values

percentiles

percentiles at which to calculate cutoff values

type

see wtd.quantile for a list of different options

Value

• percentiles for visual field index

References

[1] B. Bengtsson and A. Heijl. A visual field index for calculation of glaucoma rate of progression. American Journal of Ophthalmology, 145, 2008

See Also

vfindex, vfstats, gloperc, locperc

Examples

# DO NOT EXECUTE
#vfiperc( vals )