This value set includes codes based on the following rules:

• Include these codes as defined in http://dicom.nema.org/resources/ontology/DCM

  Code	Display	Definition
  111843	Automated Optical	Real time evaluation of the camera image to recognize blinks and fixation losses with influence on the test procedure. Blinks that interfere with stimuli presentation cause the automated repetition of such stimulus presentations. Fixation losses can be used to delay the stimulus presentation until correct fixation is regained.
  111844	Blind Spot Monitoring	A method of monitoring the patient's fixation by periodically presenting stimulus in a location on the background surface that corresponds to the patient's blind spot.
  111845	Macular Fixation Testing	A method of monitoring the patient's fixation by presenting the stimulus to the patient's macula.
  111846	Observation by Examiner	A method of monitoring the patient's fixation by observation from the examiner of the patient.

• Include these codes as defined in http://snomed.info/sct

  Code	Display
  260413007	None