Pupil shapes

Mayethian pupil shape variants

Have you ever thought of why you have round pupils, while animals possess varied shapes? Don’t worry, we answer you today! We live in a wonderful world that is full of beauty, charm and adven…

Learn why cats have vertical pupils and learn about the advantage and disadvantages of different animal eye pupil shapes.

A 55-year-old woman noticed that her right pupil was oddly shaped, associated with a mild ache. Her afferent visual examination, ocular and eyelid motility, and fundi were normal. Her left pupil was round and reactive (figure 1). The right pupil was elongated (points at 11:00 and 5:00) and tonic (figure 2). There was no ocular hypertension or corneal edema. A year later, the pupil shape became triangular;

Unlike most creatures with eyes, goats have horizontal rectangular pupils in their eyes. This wider pupil gives them the advantage of having a much wider periphery and it lets them see the edges of…