How to spell DIOPTIRAE correctly?

The misspelling "dioptirae" may have been intended as "dipterans", a term referring to insects with two wings. Other possible correct suggestions could be "dioptrics", a branch of physics related to light refraction or "diopters", a unit of measurement for the optical power of lenses.

• Dioptra The dioptra was an ancient Greek instrument used to measure angles.
• Dioptre The dioptre is a unit of measure used to measure the power of a lens.

Contempories

• contemporaneous
• contemporaries
• contemporary
• contemptuous
• cotemporaries