why pupil of the eye appears black in colour?
answer please!!!
Answers
Answer:
The pupil is a black hole located in the center of the iris of the eye that allows light to strike the retina.[1] It appears black because light rays entering the pupil are either absorbed by the tissues inside the eye directly, or absorbed after diffuse reflections within the eye that mostly miss exiting the narrow pupil. The term “pupil” was created by Gerard of Cremona.[2]
Pupil
Eye iris.jpg
The pupil is the central opening of the iris on the inside of the eye, which usually appears black. The grey/blue or brown area surrounding the pupil is the iris. The white outer area of the eye is the sclera. The central outermost transparent colorless part of the eye (through which we can see the iris and pupil) is the cornea.
Schematic diagram of the human eye en.svg
Cross-section of the human eye, showing the position of the pupil.
Details
Part of
Eye
System
Visual system
Identifiers
Latin
Pupilla. (Plural: Pupillae)
MeSH
D011680
TA
A15.2.03.028
FMA
58252
Anatomical terminology
[edit on Wikidata]
In humans, the pupil is round, but other species, such as some cats, have vertical slit pupils, goats have horizontally oriented pupils, and some catfish have annular types.[3] In optical terms, the anatomical pupil is the eye's aperture and the iris is the aperture stop. The image of the pupil as seen from outside the eye is the entrance pupil, which does not exactly correspond to the location and size of the physical pupil because it is magnified by the cornea. On the inner edge lies a prominent structure, the collarette, marking the junction of the embryonic pupillary membrane covering the embryonic pupil.
Explanation:
Because it goes back all the way to the first humans, it's a very dark melanin. are dark brown/black eyes and grey eyes they're more rare than green eyes and light blue eyes. green eyes are actually very common