1. Eye glasses with lenses that are divided into two parts with one section that corrects for distant vision and another that corrects for near vision, as an eyeglass lens; in other words: the upper half is for looking at things far away and the lower half is for reading or for looking at things that are near the viewer.
2. Embodying two distinct and often conflicting goals, interests, or courses of action: Bibocals are eyeglasses made with double lenses of different focuses so that the wearer may have one focus for distant vision and one of close focus for reading.