The discovery of optical coherence tomography and its revolutionary impact on ophthalmology

Optical Coherence Tomography (OCT) has revolutionized the field of ophthalmology by enabling high-resolution, cross-sectional imaging of ocular structures, allowing for early diagnosis, monitoring, and management of various retinal and optic nerve disorders. As a non-invasive imaging modality based on low-coherence interferometry, OCT provides micrometer-scale resolution images of the retina, choroid, and optic nerve head, significantly enhancing our understanding of disease pathophysiology. The evolution of OCT technology, from time-domain to spectral-domain and swept-source OCT, has resulted in improved image acquisition speed, higher resolution, and better tissue penetration, enabling more precise evaluation of retinal layers and choroidal vasculature. Its application in the detection and management of conditions such as age-related macular degeneration, diabetic retinopathy, glaucoma, and central serous chorioretinopathy has led to earlier interventions and improved patient outcomes. Furthermore, advances such as OCT angiography have expanded its capabilities to visualize microvascular changes without the need for dye-based angiography, providing critical insights into retinal vascular pathologies. With continuous technological refinements and integration with artificial intelligence, OCT is expected to play an even more significant role in the future of personalized medicine, enhancing diagnostic accuracy, treatment monitoring, and disease prognosis in ophthalmology.