occularium

plural occularia

1. alternativeAlternative form of ocularium.

   An alteration is also noticeable in the occularium, which is no longer a slit cut in the metal itself, but formed by an opening left between the upper and the lower portion, the helm being now constructed of three pieces—the crown, ...

   2013, James R. Planche, An Illustrated Dictionary of Historic Costume, Courier Corporation, →ISBN, page 283

   1 more example

   […] can be identified by the dark area around the eyes and the pale central strip of the occularium. However, Nelima gothica can often show a very striking pale eye ring with a narrow dark strip down the centre of the occularium and here the legs are essential in making a correct determination.

   1995, The Irish Naturalists' Journal, page 310