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Yes, even though having black irises is extremely rare. Some people mistake very dark brown eyes for being black eyes (irises). This dark brown color comes from a condition called aniridia, where the color of the iris is very close to the color of the pupil.

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Why do eyes turn black when a person is dying?

The eyes may appear to turn black when a person is dying due to the pupils dilating and the lack of light reflecting off the iris, making them appear darker.


What are the little lines in the iris of the eye?

The little lines in the iris of the eye are known as iris crypts or furrows. They are natural characteristics of the iris and vary in size and shape from person to person. These crypts help determine the unique pattern of the iris, which is used in biometric identification.


How does a blind person pass through iris recognition test?

A blind person may need assistance from a trusted individual to complete an iris recognition test. This individual can guide the blind person through the process and help ensure the test is completed accurately. Additionally, some iris recognition systems offer accessibility features such as voice guidance to assist individuals with visual impairments.


What part of the eye is blue in a blue eyed person?

The blue color in a blue-eyed person comes from the iris, which is the colored part of the eye. The blue color is a result of the way light is scattered and absorbed by the iris's cells, particularly the stroma.


What is a cause of iris pigment discoloration?

A cause of iris pigment discoloration can be a condition called heterochromia, which is when a person has two different colored irises. Another cause can be trauma or injury to the eye, which can lead to changes in iris pigmentation. Additionally, certain medications or medical conditions can also affect the color of the iris.