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Retinal optical coherence tomography: past, present and future perspectives.

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Optical coherence tomography (OCT) has evolved significantly, offering advanced diagnostic capabilities in ophthalmology. Current spectral-domain OCT provides detailed retinal imaging for early disease detection and monitoring, with future developments promising even greater resolution and insights.

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Area of Science:

  • Ophthalmology
  • Biomedical Imaging
  • Medical Technology

Background:

  • Optical coherence tomography (OCT) has advanced considerably since its inception in the 1990s.
  • Early OCT systems provided basic non-invasive diagnostic options, primarily in ophthalmology.
  • Subsequent generations improved diagnostic and treatment capabilities for retinal conditions.

Purpose of the Study:

  • To review the evolution and advancements in Optical Coherence Tomography (OCT) technology.
  • To highlight the capabilities of current spectral-domain OCT (SD-OCT) for diagnosing and monitoring retinal and glaucomatous pathologies.
  • To discuss emerging OCT modalities and future development directions.

Main Methods:

  • Review of technological advancements in OCT systems over time.
  • Description of the diagnostic utility of spectral-domain OCT (SD-OCT) in ophthalmology.
  • Introduction to novel OCT techniques like polarization-sensitive OCT (PS-OCT) and Doppler OCT.

Main Results:

  • Modern SD-OCT systems offer comprehensive tools for early diagnosis and precise monitoring of ocular diseases.
  • PS-OCT provides enhanced visualization of retinal pigment epithelium changes.
  • Doppler OCT enables quantitative blood flow measurements within ocular tissues.

Conclusions:

  • OCT has become an indispensable tool in modern ophthalmology, with continuous improvements enhancing its diagnostic power.
  • Future OCT developments are expected to focus on improving transverse resolution and penetration depth.
  • Emerging OCT modalities like PS-OCT and Doppler OCT offer new avenues for understanding tissue properties and physiological processes.