Why do my pupils look like a cat's? - briefly
Your pupils may resemble a cat's due to a rare condition called "cat eye syndrome," which can cause vertical or slit-shaped pupils, or it could be a result of certain eye injuries or abnormalities.
Why do my pupils look like a cat's? - in detail
The appearance of your pupils resembling those of a cat can be attributed to a specific condition known as coloboma or keyhole pupil. This occurs when there is a congenital or acquired defect in the structure of the iris, the colored part of the eye. In a healthy eye, the pupil is round and centrally located, but in cases of coloboma, the iris fails to develop fully during embryonic growth, resulting in an irregularly shaped pupil. The defect can create a vertical or elongated slit, resembling the pupils seen in cats. Cats naturally have vertically slit pupils due to evolutionary adaptations that enhance their ability to hunt in low light and judge distances accurately. However, in humans, this shape is unusual and often linked to genetic factors, trauma, or certain medical conditions. Another possible explanation is the presence of anisocoria, where one pupil is significantly larger or differently shaped than the other, sometimes giving the appearance of a cat-like pupil. Additionally, certain eye surgeries or injuries can alter the shape of the iris, leading to this phenomenon. It is essential to consult an ophthalmologist if you notice such changes in your pupils, as they can indicate underlying health issues that may require attention. While the resemblance to a cat’s pupils might be visually striking, it is crucial to determine the cause to ensure proper eye health and function.