Limited data are available to assess this recommendation. Wearing goggles over contact lenses while swimming is often recommended by eye care professionals. Wu, Yvonne T Tran, Jess Truong, Michelle Harmis, Najat Zhu, Hua Stapleton, Fiona Interocular suppression can be almost eliminated by using a temporally sparse stimulus of 1.25 times/s with a separation of 166.7 ms between stimulation of corresponding segments of the two eyes.ĭo swimming goggles limit microbial contamination of contact lenses? It is possible to record mfVEP for both eyes during dichoptic stimulation using virtual reality goggles, which present binocular simultaneous patterns driven by independent sequences. Experiment 4 demonstrated maximum amplitude and least suppression (4.8%) with stimulation at 1.25 times/s with 166.7 ms separation between eyes. Experiment 3 demonstrated similar suppression between orthogonal and checkerboard stimuli (p = 0.08). However, there was suppression of amplitude of responses to dichoptic stimulation by 17.9+/-5.4% compared to monocular stimulation. Experiment 1 demonstrated good traces in all regions and confirmed topographic representation. Experiment 4 involved dichoptic presentation of checkerboard stimuli at different levels of sparseness (5.0 times/s, 2.5 times/s, 1.66 times/s and 1.25 times/s), where stimulation of corresponding segments of two eyes were separated by 16.7, 66.7,116.7 & 166.7 ms respectively. In Experiment 3, orthogonally oriented gratings were dichoptically presented. Experiment 2 involved monocular stimulation and comparison of amplitude with Experiment 1. Experiment 1 involved recording responses to dichoptically presented checkerboard stimuli and also confirming true topographic representation by switching off specific segments. ten healthy volunteers were recruited and temporally sparse pattern pulse stimuli were presented dichoptically using virtual reality goggles.
This study aimed at evaluating the possibility of simultaneously recording mfVEP for both eyes with dichoptic stimulation using virtual reality goggles and also to determine the stimulus characteristics that yield maximum amplitude. Multifocal visual evoked potentials (mfVEPs) have demonstrated good diagnostic capabilities in glaucoma and optic neuritis. Multifocal visual evoked responses to dichoptic stimulation using virtual reality goggles: Multifocal VER to dichoptic stimulation.Īrvind, Hemamalini Klistorner, Alexander Graham, Stuart L Grigg, John R
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