Abstract
Purpose :
The purpose of this study was to evaluate if eye movement compensation with eye tracking improves Goldmann visual field results.
Methods :
Eye movements were recorded with an eye tracker during standard “manual” Goldmann perimetry performed on the MonCvONE full field projection perimeter (Metrovision, Perenchies, France).
The eye tracker measured the distance between the pupil center and the corneal reflection to provide an estimation of eye orientation. The pupil size was also measured to eliminate blinks and to compensate shifts of the pupil center resulting from pupil constriction.
25 exams performed on subjects with neuro-ophthalmic diseases were reprocessed after the exams to apply a compensation of eye movement shifts to the position of the patient’s responses.
Results :
Eye movement compensation was found effective in 2 cases out of 25. The first case with a central scotoma and stable eccentric fixation, the seEye movement compensation was found effective in 2 cases out of 25. The first case with a central scotoma and stable eccentric fixation, the second with hemianopsia and shifts of fixation. In other cases, eye movement compensation was not effective because of eye movement instability (nystagmus, ..). However, the recording of eye movements was useful in all cases to document the reliability of the exam by providing information about the stability of fixation (BCEA) and about the waveform of abnormal eye movements (2 cases of nystagmus).
cond with hemianopsia and shifts of fixation. In other cases, eye movement compensation was not effective because of eye movement instability (nystagmus, ..). However, the recording of eye movements was useful in all cases to document the reliability of the exam by providing information about the stability of fixation (BCEA) and about the waveform of abnormal eye movements (2 cases of nystagmus).
Conclusions :
Eye movement analysis is useful to document the reliability of Goldmann visual field exams but eye movement compensation is effective only in a small percentage of cases.
This is a 2020 ARVO Annual Meeting abstract.