Perimetry While Moving the Eyes: Implications for the Variability of Visual Field Defects
| Autor: | Bernhard A. Sabel, Tobias Guenther, Erich Kasten, Armin Toepfer |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Eye Movements genetic structures Motion Perception Vision Low Fixation Ocular Diagnostic Techniques Ophthalmological Predictive Value of Tests Saccades Humans Medicine Motion perception Aged business.industry Blind spot Outcome measures Eye movement Middle Aged Pursuit Smooth eye diseases Visual field Ophthalmology Saccade Fixation (visual) Eye tracking Optometry Female sense organs Neurology (clinical) Visual Fields Artifacts business Photic Stimulation |
| Zdroj: | Journal of Neuro-Ophthalmology. 28:308-319 |
| ISSN: | 1070-8022 |
| DOI: | 10.1097/wno.0b013e31818e3cd7 |
| Popis: | Background: In standard perimetry, subjects fixate so that saccades are reduced and testing precision is increased. However, because vision in daily life requires eye movements, it is appropriate to assess visual fields during eye movement. Methods: Perimetry was carried out in 8 healthy subjects and in 16 patients with visual field defects under conditions of a stable and moving fixation spot. Eye movements were simultaneously recorded with an eye tracker. Outcome measures included stimulus detection, variability of visual field border, and saccade amplitudes. Results: Perimetric performance during stable fixation was comparable to that during eye movement. All subjects showed 92%-96% correct detections of the fixation controls and a stable and comparable blind spot position in the stable and moving fixation spot conditions. The eye tracker revealed that 97% of the time the eyes were positioned within ±1 from fixation. Conclusions: Visual fields obtained by perimetry while moving the eyes is comparable to standard perimetry in which a stable fixation spot minimizes eye movements. |
| Databáze: | OpenAIRE |
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