Certified Ophthalmic Technician Practice Test 2025 – Complete Exam Prep

Optical coherence tomography (OCT) is specifically designed for high-resolution imaging of the posterior segment of the eye, which includes structures such as the retina, the optic nerve head, and the choroid. This imaging technique uses light waves to capture cross-sectional images of the eye, allowing for detailed visualization of the internal layers of the retina. OCT is highly valued in clinical settings because it not only aids in the diagnosis of various conditions like glaucoma and macular degeneration but also provides progressive imaging that can help monitor treatment responses over time.

While B-scan ultrasonography can also provide valuable information about the posterior segment, it is not as detailed or specific as OCT. Contact biometry is primarily focused on measuring the eye's axial length for cataract surgery and refractive procedures, while ultrasonic pachymetry is used for measuring corneal thickness. Therefore, the choice of optical coherence tomography is particularly highlighted for its role in examining the posterior segment comprehensively and precisely, which is crucial for accurate diagnosis and management of ocular diseases.