Entity: IRIS
IRIS is the colored, muscular ring around the pupil of the eye in vertebrate animals, controlling the size of the pupil to regulate the amount of light reaching the retina.
IRIS
Etymology
The term 'IRIS' originates from the Latin word for 'rainbow', reflecting the diverse colors of the iris in the eye.
Definition
The iris is the opaque contractile diaphragm that forms the colored portion of the eye, surrounding the pupil. It controls the size of the pupil, regulating the amount of light entering the eye.
Historical Context
Throughout history, the iris has been a subject of fascination and study in the field of ophthalmology, contributing to a deeper understanding of vision and eye health.
Cultural Significance
In various cultures, the iris is associated with different symbolic meanings, such as insight, perception, and protection.
Related Concepts
The iris is closely related to concepts such as pupil dilation, eye anatomy, and vision science.
See Also
- Pupil
- Eye anatomy
- Ophthalmology
A vital part of the eye, the iris is a contractile diaphragm that forms the colored portion of the eye, controlling the size of the pupil to regulate the amount of light entering the eye.