Certified Ophthalmic Technician (COT) Practice Test 2026 - Free COT Practice Questions and Study Guide

The stroma of the cornea is primarily made of connective tissue, which plays a crucial role in maintaining the cornea's transparency and structural integrity. The stroma is composed mostly of collagen fibers arranged in a highly ordered pattern, which is essential for corneal clarity. The arrangement of these fibers allows light to pass through with minimal scattering, contributing to the cornea's function in focusing vision.

Connective tissue in the cornea also contains fibroblasts, keratocytes, and a matrix that supports cellular functions and provides the necessary hydration and nutrients. This composition distinguishes it from epithelial or muscle tissues, which have different structures and functions. Epithelial tissues primarily serve as protective layers and are found on the outer surface of the cornea, not within the stroma. Similarly, muscle tissue does not play a role in the composition of the cornea, focusing instead on facilitating movement in other parts of the body.

Understanding that the stroma is a specialized type of connective tissue is critical for recognizing its functions within the eye, particularly in regards to its role in refractive properties and overall ocular health.