snellen_steps {eye}

Convert plus minus entries

Description

Convert plus minus entries

Usage

snellensteps(x, smallstep)

Arguments

x

Vector with VA entries of class snellen - needs to be in format xx/yy

smallstep

if plusminus shall be considered as logmar equivalent

Value

character vector of Snellen entries

See Also

https://en.wikipedia.org/wiki/Psychometric_function

Other VA converter: VAwrapper, plausibility_methods, va_methods, va_mixed(), va(), which_va()