Eye-tracking-based visual field analysis (EFA): a reliable and precise perimetric methodology for the assessment of visual field defects
| Autor: | Michael Christian Leitner, Florian Hutzler, Sarah Schuster, Patrick Marvan, H A Reitsamer, Lorenzo Vignali, Stefan Hawelka |
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| Rok vydání: | 2020 |
| Předmět: |
vision
Visual perception field of vision genetic structures Computer science visual (cerebral) cortex Glaucoma visual perception 050105 experimental psychology rehabilitation 03 medical and health sciences 0302 clinical medicine medicine 0501 psychology and cognitive sciences Blind spot 05 social sciences Eye movement food and beverages RE1-994 medicine.disease eye diseases Visual field Ophthalmology diagnostic tests/investigation Visual cortex medicine.anatomical_structure glaucoma Global Ophthalmology Optometry Eye tracking sense organs Visual angle 030217 neurology & neurosurgery |
| Zdroj: | BMJ Open Ophthalmology BMJ Open Ophthalmology, Vol 6, Iss 1 (2021) |
| ISSN: | 2397-3269 |
| Popis: | ObjectiveSeveral studies report evidence for training-related neuroplasticity in the visual cortex, while other studies suggest that improvements simply reflect inadequate eye fixation control during perimetric prediagnostics and postdiagnostics.Methods and analysisTo improve diagnostics, a new eye-tracking-based methodology for visual field analysis (eye-tracking-based visual field analysis (EFA)) was developed. The EFA is based on static automated perimetry and additionally takes individual eye movements in real time into account and compensates for them. In the present study, an evaluation of the EFA with the help of blind spots of 58 healthy participants and the individual visual field defects of 23 clinical patients is provided. With the help of the EFA, optical coherence tomography, Goldmann perimetry and a Humphrey field analyser, these natural and acquired scotomas were diagnosed and the results were compared accordingly.ResultsThe EFA provides a SE of measurement of 0.38° for the right eye (OD) and 0.50° for the left eye (OS), leading to 0.44° of visual angle for both eyes (OU). Based on participants’ individual results, the EFA provides disattenuated correlation (validity) of 1.00 for both OD and OS. Results from patients suffering from cortical lesions and glaucoma further indicate that the EFA is capable of diagnosing acquired scotoma validly and is applicable for clinical use.ConclusionOutcomes indicate that the EFA is highly reliable and precise in diagnosing individual shape and location of scotoma and capable of recording changes of visual field defects (after intervention) with unprecedented precision. Test duration is comparable to established instruments and due to the high customisability of the EFA, assessment duration can be shortened by adapting the diagnostic procedure to the patients’ individual visual field characteristics. Therefore, the saccade-compensating methodology enables researchers and healthcare professionals to rule out eye movements as a source of inaccuracies in pre-, post-, and follow-up assessments. |
| Databáze: | OpenAIRE |
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