What is the appearance of the posterior surface of the iris epithelium?

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Multiple Choice

What is the appearance of the posterior surface of the iris epithelium?

Explanation:
The posterior surface of the iris is lined by a pigmented epithelium that is arranged in two cellular layers (bilaminar). This two-layered, pigmented epithelium forms the dark, densely pigmented lining on the back of the iris and is continuous with the pigmented portion of the ciliary epithelium. The pigmentation helps absorb stray light and reduce scattering, contributing to the iris’s appearance. It is not a nonpigmented layer, nor a single-layer epithelium, and it is the posterior surface—not the anterior—being described.

The posterior surface of the iris is lined by a pigmented epithelium that is arranged in two cellular layers (bilaminar). This two-layered, pigmented epithelium forms the dark, densely pigmented lining on the back of the iris and is continuous with the pigmented portion of the ciliary epithelium. The pigmentation helps absorb stray light and reduce scattering, contributing to the iris’s appearance. It is not a nonpigmented layer, nor a single-layer epithelium, and it is the posterior surface—not the anterior—being described.

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