plausibility_methods: Plausibility checking

Description Usage Arguments Value Plausibility checks See Also

Description

S3 methods for checking plausibility of VA entries

Usage

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checkVA(x, ...)

## S3 method for class 'quali'
checkVA(x, ...)

## S3 method for class 'snellen'
checkVA(x, ...)

## S3 method for class 'snellendec'
checkVA(x, ...)

## S3 method for class 'logmar'
checkVA(x, ...)

## S3 method for class 'etdrs'
checkVA(x, ...)

## Default S3 method:
checkVA(x, ...)

Arguments

x

vector of visual acuities

...

further arguments passed to methods

Value

vector with visual acuity of class va. See also "VA classes"

Plausibility checks

VA can be snellen (fraction: feet/meter), snellen decimal, logMAR, ETDRS, or "qualitative" (Counting fingers, etc.)

Any element which is implausible / not recognized will be converted to NA

See Also

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


tjebo/eye documentation built on Jan. 24, 2022, 8:34 p.m.