Chapter 7 The Four Stages of Tissue Condition
The iris constitutes a sophisticated communication network capable of processing vast quantities of data. As the most intricate external anatomical structure in humans, it maintains connections with every organ and tissue via the nervous system. Visual information is transmitted to the brain through the optic nerves, which are directly linked to the eyes. Notably, the eye operates bidirectionally—these nerves also relay feedback regarding internal physiological states to the central nervous system.

Table: The Four Stages of Tissue Condition in the Iris
Stage | Clinical Manifestations |
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1. Acute | Characterised by inflammatory processes that activate systemic response mechanisms. |
2. Sub-Acute | Fibres exhibit no elevation and present a greyish-white or faint yellow discolouration. |
3. Chronic | Identified by a pronounced dark grey pigmentation within the iris structure. |
4. Degenerative | Manifests as deeply embedded blackened areas in the stromal layer. |