Optical Coherence Tomography Imaging for Glaucoma - Today and Tomorrow

Area of Science:

• Ophthalmology
• Medical Imaging
• Glaucoma Diagnostics

Background:

• Digital imaging technologies for glaucoma diagnostics have advanced significantly.
• Optical coherence tomography (OCT) is increasingly applied for analyzing the anterior chamber angle and optic nerve head (ONH).

Purpose of the Study:

• To review the evolution and application of OCT in glaucoma diagnostics.
• To highlight the capabilities of new OCT generations in imaging anterior segment structures and the ONH.
• To discuss the role of these technologies in understanding glaucoma mechanisms and improving patient risk assessment.

Main Methods:

• Review of advancements in time-domain, spectral-domain, and swept-source OCT technologies.
• Description of the 3D imaging capabilities of second-generation anterior segment swept-source OCT for anterior chamber angle analysis.
• Explanation of how spectral-domain and swept-source OCTs enhance the measurement reliability of the lamina cribrosa and neuroretinal rim.

Main Results:

• Second-generation anterior segment swept-source OCT enables rapid, 3D imaging of the anterior chamber angle for angle-closure detection.
• Detailed examination of crystalline lens morphology and its relation to the anterior chamber is now possible.
• Improved measurement reliability for lamina cribrosa and neuroretinal rim configurations using advanced OCTs.
• Ongoing development of software for automatic analysis of volumetric OCT data.

Conclusions:

• New digital imaging technologies, particularly advanced OCT, are revolutionizing glaucoma diagnostics.
• These technologies facilitate a deeper understanding of glaucoma pathophysiology, including the role of the crystalline lens and ONH deformation.
• Future developments are expected to further enhance the detection and risk stratification of both angle-closure and open-angle glaucomas.