Encyclopedia of Biometrics

2009 Edition
| Editors: Stan Z. Li, Anil Jain


Reference work entry
DOI: https://doi.org/10.1007/978-0-387-73003-5_630

The iris consists of muscle tissue that comprises of a sphincter muscle that causes the pupil to contract and a group of dilator muscles that cause the pupil to dilate. The back surface is covered by a layer of pigmented epithelial tissue. The outer edge is attached to the sclera.

 Anatomy of Eyes

 Iris Image Data Interchange Formats, Standardization

 Template Protection

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© Springer Science+Business Media, LLC 2009