Certified Ophthalmic Medical Technologist (COMT) Practice Exam

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What is the primary advantage of Fourier-domain OCT over time-domain OCT?

Single tissue scanning
Higher resolution and faster scanning
Lower reading time
Less tissue penetration

The correct answer is: Higher resolution and faster scanning

The primary advantage of Fourier-domain Optical Coherence Tomography (OCT) over time-domain OCT is its higher resolution and faster scanning capabilities. Fourier-domain OCT uses a different mechanism to capture data, allowing it to acquire depth information in a parallel fashion rather than sequentially, as done in time-domain OCT. This leads to a significant increase in the speed of image acquisition, which minimizes motion artifacts and allows for more detailed imaging of ocular structures. The increased resolution is due to the ability of Fourier-domain OCT to gather more information in a single scan, resulting in sharper images and a more refined understanding of the microstructure of the retina and other tissues. This enhanced resolution not only supports better diagnosis but also enables the detection of subtle changes in retinal structure that may indicate the onset of disease at earlier stages. The faster scanning capability also contributes to patient comfort and efficiency in a clinical setting, making it a preferred choice for eye care professionals.