To help assist with cell typing in the medulla, here is a medulla reference link for the “current estimate of the layers and columns of the medulla”.
The link includes layers 1-10 for the medulla in both optic lobes. Each layer in the medulla has its own annotation tab. You may find it useful to only display the layers that your cell should be arborizing within.
Special thanks to Emil Kind and the Wernet Lab at Freie Universität Berlin for this handy reference link!