opiSetup_for_Octopus900: Implementation of opiSetup for the Octopus900 machine.

In OPI: Open Perimetry Interface

Implementation of opiSetup for the Octopus900 machine.

Description

This is for internal use only. Use opiSetup() with the same parameters.

Arguments

lum	Luminance level in cd/m^2
color	Stimulus color (see details)
fixation	fixation target
fixIntensity	fixation point intensity

Details

Allowable lum and color are defined in the .opi_env$O900 environment.

• lum is intensity of the background and can be one of

  • .opi_env$O900$BG_OFF, which turns background off.

  • .opi_env$O900$BG_1, background of 1.27 cd/\mbox{m}^2.

  • .opi_env$O900$BG_10, background of 10 cd/\mbox{m}^2.

  • .opi_env$O900$BG_100, background of 100 cd/\mbox{m}^2.

• color can be one of the following choices.

  • .opi_env$O900$MET_COL_WW for white-on-white

  • .opi_env$O900$MET_COL_RW for red-on-white

  • .opi_env$O900$MET_COL_BW for blue-on-white

  • .opi_env$O900$MET_COL_WY for white-on-yellow

  • .opi_env$O900$MET_COL_RY for red-on-yellow

  • .opi_env$O900$MET_COL_BY for blue-on-yellow

• fixation is one of

  • .opi_env$O900$FIX_CENTRE or .opi_env$O900$FIX_CENTER

  • .opi_env$O900$FIX_CROSS

  • .opi_env$O900$FIX_RING

• fixIntensity is a percentage between 0 and 100. 0 is off, 100 the brightest.

Note if you specify fixation you also have to specify fixIntensity.

Value

A list with element err which is

• NULL on success

• -1 indicates opiInitialize has not been called.

• -2 indicates could not set the background color.

• -3 indicates could not set the fixation marker.

• or a string message about bad parameters

Examples

## Not run: 
  chooseOpi("Octopus900")
  oi <- opiInitialize(eyeSuiteJarLocation="c:/EyeSuite/",
                      eyeSuiteSettingsLocation="c:/Documents and Settings/All Users/Haag-Streit/",
                      eye="left")
  if(!is.null(oi$err))
      stop("opiInitialize failed")
  if(!is.null(opiSetup(fixation=.opi_env$O900$FIX_CENTRE)$err))
      stop("opiSetup failed")
  if(!is.null(opiSetup(fixation=.opi_env$O900$FIX_RING, fixIntensity=0)$err))
      stop("opiSetup failed")
  if(!is.null(opiSetup(color=.opi_env$O900$MET_COL_BY)$err))
      stop("opiSetup failed")
  if(!is.null(opiSetup(lum=.opi_env$O900$BG_100, color=.opi_env$O900$MET_COL_RW)$err))
      stop("opiSetup failed")
  opiClose()

## End(Not run)

OPI documentation built on April 12, 2025, 1:24 a.m.