ArticleDocumenta ophthalmologica. Advances in ophthalmology2023
Assessment of digital light processing (DLP) projector stimulators for visual electrophysiology.
Article in Documenta ophthalmologica. Advances in ophthalmology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 7 citations in OpenAlex.
- True pattern-reversal LED stimulator and its comparison to LCD and CRT displays: visual evoked potential study.Scientific reports · 2024Article
- International Guidelines for Photosensitive Epilepsy: Gap Analysis and Recommendations.ACM transactions on accessible computing · 2024Article
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Authors and funding
2 authors at 2 institutions in 1 country.
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Abstract
introductionVisual electrophysiology tests require the use of precise and calibrated visual display units (VDUs). Existing VDUs for presenting structured stimuli are now mostly obsolete, with modern solutions limited or unsuitable for clinical testing. Digital light processing (DLP) laser projectors have recently become commercially available and this study aimed to assess their suitability as VDUs for visual electrophysiology testing.
methodsThis study consisted of two sections. The first was a photometric study of two DLP laser projectors (Viewsonic LS831WU and HiSense 100L5FTUK) to assess luminance, contrast, spectral and temporal characteristics of the stimulus. The second was a physiological study comparing pattern electroretinograms (PERG) and visual evoked potentials (PVEPs) amplitudes and peak-times recorded using a DLP laser projector, photometrically and spatially matched to existing plasma VDUs at our institution (Pioneer Electronics Corporation, PDP422MXE).
resultsThe Viewsonic DLP laser projector was capable of high luminance levels (0-587.5 cd/m DISCUSSION: The DLP laser projector tested in this study is a viable and practical replacement VDU for clinical electrophysiology tests of vision. The device is easily capable of meeting ISCEV standards, and showed PERG and PVEP amplitudes larger than existing systems despite photometric and spatial matching. The DLP laser projectors are capable of very large field sizes so are beneficial for paediatric testing or those wishing to examine large field responses. Importantly, it was observed that some devices may suffer input lag jitter, therefore, individual calibration and assessment of DLP projection systems is an important consideration before clinical implementation.
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