Grids for Photopic, Mesopic and Scotopic Microperimetry in the MP3-S device

<p dir="ltr">These are the grids we propose for performing sequential photopic, mesopic and scotopic in the MP3-S microperimetry device (Nidek, Gamagori, Japan). The name of the specific configuration and grids we have used herein is MGT020 followed by the modality (MGT020 Photo, Meso or Scoto).</p><p dir="ltr">All these .xml files can be imported directly to the device via the Pattern Editor in the NAVIS-EX software.</p><p dir="ltr">The testing configurations we used are as follows:</p><p dir="ltr">For the purposes of this protocol, we developed two custom grids: a 32-point grid to be used for photopic and mesopic, and another 28-point grid to be used in scotopic testing. Both grids test the central 10 degrees of the macula (10-2).</p><p dir="ltr">In photopic and mesopic testing, a Goldmann size III stimulus with 200 ms duration was used in a 4-2 strategy, on a background luminance of 31.4 asb (9.99 cd/m²) for photopic, and 4 asb (1.27 cd/m²) for mesopic. The fixation target was a 1-degree size red cross. The dynamic range of the device in these modalities is 34 dB.</p><p dir="ltr">In scotopic testing, the grid is composed of 28 points – the same 32 points used in mesopic/photopic testing minus the four positions within 2 degrees of the fovea (rod-free zone; marked as points 1, 9, 17 and 25 in Figure 1A). A Goldmann size V stimulus with 200 ms duration in a 4-2 strategy, and a background luminance of 0.003 asb (0.0009 cd/m²) was used. The dynamic range of the device in scotopic setting is 24 dB.</p>