The collarette (a.k.a. the ruff or the autonomic nerve wreath) is a major landmark, and is ideally found approximately one third the...

Does iris structure change? Not withstanding injury or disease, the iris structure is extremely stable. So much so that iris biometrics...

Are pigments caused by toxins, heavy metals and or medication? Some of them can be for sure. One of the most common sites to see a...

For the record, I studied with Bernard Jensen and knew him personally for nearly 20 years. He was my friend and mentor. I have the...

Sign: Indentations in the iris structure that radiate outward like spokes in a wheel are commonly referred to as Radii Solaris (rays of...

Sign: Collagen bundles in the shape of flocks, (red arrows) clouds, smears (orange arrow) or beads (yellow arrow) are collectively called...