chooseOpi: Choose an implementation of the OPI.

Description Usage Arguments Value Author(s) References Examples

View source: R/opi.r

Description

Chooses an implementation of the OPI to use.

Usage

1
chooseOpi(opiImplementation)

Arguments

opiImplementation

A character string that is one of the following.

  • "SimNo" for a simulator that always doesn't see.

  • "SimYes" for a simulator that always does see.

  • "SimHenson" for a simulator that uses a cummulative gaussian psychometric function with standard deviation according to Henson et al (2000) where variability increases as true threshold (Humphrey dB) value decreases.

  • "SimHensonRT" as for SimHenson, but response times in ms are sampled from a supplied response time data set for each true positive response.

  • "SimGaussian" for a simulator that uses a cummulative gaussian psychometric function with standard deviation supplied in opiInitialize().

  • "Octopus900" for interfacing with the Octopus 900.

  • "Octopus900F310" for interfacing with the Octopus 900 using Logitech F310 controller.

  • "Octopus600" for interfacing with the Octopus 600.

  • "HEP" not working so well in new HEPs.

  • "KowaAP7000" for interfacing with Kowa AP-7000.

  • NULL print a list of available OPI implementations.

Value

Returns TRUE if successful, FALSE otherwise.

Author(s)

Andrew Turpin <[email protected]>

References

David B. Henson, Shaila Chaudry, Paul H. Artes, E. Brian Faragher, and Alec Ansons. Response Variability in the Visual Field: Comparison of Optic Neuritis, Glaucoma, Ocular Hypertension, and Normal Eyes. Investigative Ophthalmology & Visual Science, February 2000, Vol. 41(2).

A.M. McKendrick, J. Denniss and A. Turpin "Response times across the visual field: empirical observations and application to threshold determination". In submission, August 2013.

Please cite: A. Turpin, P.H. Artes and A.M. McKendrick "The Open Perimetry Interface: An enabling tool for clinical visual psychophysics", Journal of Vision 12(11) 2012.

http://perimetry.org/OPI

Examples

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    if(!chooseOpi("SimHenson"))
        warnings()

OPI documentation built on Nov. 17, 2017, 6:15 a.m.