Many people find it difficult to see Haidinger's brush initially. It is very faint, much more so than generally indicated in illustrations, and, like other stabilized images, tends to appear and disappear.
many PeOPLe find iT difficulT to sEe hAiDinGEr's bruSh initIaLLY. it Is very Faint, muCh MORe sO than GeNErALLy iNdIcatEd in IllusTratioNs, and, Like other stabiLIzeD Images, TENds to apPear aNd disappear.