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This is an accepted version of this page This is the latest accepted revision, reviewed on 15 January 2025. Fear or disgust of objects with repetitive patterns of small holes or protrusions. Not to be confused with Trypanophobia. The holes in lotus seed heads elicit feelings of discomfort or repulsion in some people. Trypophobia is an aversion to the sight of repetitive patterns or clusters of ...
23. Tiny Pupils. When your cat’s pupils narrow into tiny slits, they could be signaling aggression. Look for other signs of body language to help interpret. (It could also just be really bright ...
The tapetum lucidum reflecting green in the pupils of a cat Cat eyes stand out. Cats have a tapetum lucidum, which is a reflective layer behind the retina that sends light that passes through the retina back into the eye. [1] They also have a high number of rods in their retina that are sensitive to dim light. [2]
There are some proposed ideas, one being that after the sphincter muscle is fully formed and developed in the eye there is a severing of the pupillary margins leading to the distinction of the extra pupil and the principal pupil. [8] Polycoria can also be caused any hole in one's iris to develop a sphincter muscle development. [8]
A cat staring at a human is a little more complex but if your cat's staring at you, you shouldn't really stare back, although if you find you've locked eyes with kitty without thinking, a slow ...
oculus uterque (both eyes) PD Pupillary distance PERRLA Pupils equal, round, reactive to light and accommodation PH Pinhole see Pinhole occluder and Visual_acuity#Legal_definitions: PHNI Pinhole No Improvement see Pinhole occluder and Visual_acuity#Legal_definitions: PHVA Pinhole Visual Acuity: PL Perception of light POH / PrOH Previous ocular ...
A coloboma (from the Greek κολόβωμα, meaning "defect") [1] is a hole in one of the structures of the eye, such as the iris, retina, choroid, or optic disc.The hole is present from birth and can be caused when a gap called the choroid fissure, which is present during early stages of prenatal development, fails to close up completely before a child is born.
It is called preauricular sinus which, according to the U.S. National Institutes of Health, or NIH, "generally appears as a tiny skin-lined hole or pit, often just in front of the upper ear where ...