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A C Kooijman, A Damhof; ERG lens with built-in Ganzfeld light source for stimulation and adaptation.. Invest. Ophthalmol. Vis. Sci. 1980;19(3):315-318. doi: https://doi.org/.
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A contact lens for routine electroretinography which contains a Ganzfeld light source is described. The light source consists of six light-emitting diodes and serves both as a stimulus source and a background illumination. The response characteristics with this source are comparable with those of an integrating sphere stimulator.
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