opiClose_for_Compass: Implementation of opiClose for the Compass machine.

In OPI: Open Perimetry Interface

Implementation of opiClose for the Compass machine.

Description

This is for internal use only. Use opiClose() with these Arguments and you will get the Value back.

Details

WARNING: as at Feb 2026, this will only return data once per Exam initiated on the Compass machine. If you want data returned after one opiClose call, "Stop Exam" on the Compass machine and create a new Exam. opiInitialise etc will still work as normal if you start a second session with the same Exam, but no data will be returned by opiClose.

Value

A list with elements

• err, which is an error code, NULL for no error

• fixations, which is a matrix one row per fixation and three columns:

  • time (same as time_hw in opiPresent)

  • x (degrees relative to the centre of the image returned by opiInitialise - not the PRL)

  • y (as for x)

OPI documentation built on March 4, 2026, 9:08 a.m.