5. Advantages and Limitations of Laser Diagnostics

Laser-based diagnostics offer a wide range of advantages over traditional imaging and sensing technologies. Their core benefit lies in the precision and selectivity of light–tissue interaction, enabled by the laser’s monochromatic, coherent, and collimated nature. These properties allow highly focused beams to target specific biological structures with minimal diffusion, making it possible to analyze or image tissues at the microscopic or molecular level (Barsom et al., 2016).
One major advantage is non-invasiveness. Techniques such as Optical Coherence Tomography (OCT), Laser Doppler Flowmetry (LDF), and Laser-Induced Fluorescence (LIF) do not require tissue excision or contact with the skin, reducing infection risk and patient discomfort. These tools are particularly beneficial in sensitive areas like the eye, brain, and mucosal membranes (Zafar et al., 2021).

Laser diagnostics are also known for high spatial and temporal resolution. For example, OCT provides micrometer-level cross-sectional imaging at speeds fast enough for real-time visualization, which is critical in applications such as retinal scanning and intraoperative guidance (Albrecht et al., 2013). Furthermore, laser systems often operate without ionizing radiation, unlike X-rays or CT scans, making them safer for repeated use, especially in pediatric care or chronic disease monitoring.

Modern laser-based devices are becoming increasingly compact, mobile, and automated, thanks to advances in semiconductor lasers, fiber optics, and machine learning algorithms. These innovations are opening the door to point-of-care diagnostics, even in low-resource or remote settings (Le et al., 2023). Portable Raman systems and handheld OCT units are examples of how laser diagnostics are moving out of laboratories and into real-world clinical environments.

Additionally, laser diagnostics integrate well with augmented reality (AR) and computer-assisted imaging systems, which further enhance their educational and clinical usability. AR overlays can visually highlight areas of concern during real-time scans or guide users on optimal laser settings, improving usability for both clinicians and trainees (Akçayır & Akçayır, 2017).