Diagnostic Performance of Optical Coherence Tomography for Pseudoexfoliation Glaucoma

Area of Science:

• Ophthalmology
• Glaucoma Research
• Anatomical Imaging

Background:

• Pseudoexfoliation glaucoma (PXG) and pseudoexfoliation syndrome (PXS) are distinct ocular conditions.
• Accurate differentiation between PXG and PXS is crucial for appropriate patient management.
• Optical coherence tomography (OCT) provides detailed structural information of the optic nerve head.

Purpose of the Study:

• To compare the diagnostic performance of various OCT-derived geometric parameters.
• To evaluate parameters including RNFL thickness, LC thickness, LCCI, and BMO-MRW.
• To differentiate between eyes with PXG, PXS, and healthy controls.

Main Methods:

• A cross-sectional study involving 55 PXG eyes, 55 PXS eyes, and 50 healthy eyes.
• Calculation and comparison of Areas Under the Receiver Operating Characteristic Curves (AUCs) for each parameter.
• Statistical analysis to determine the significance of differences in diagnostic performance.

Main Results:

• LC thickness and global RNFL thickness showed comparable AUCs in distinguishing PXG from PXS.
• LC thickness and LCCI demonstrated comparable AUCs to global RNFL thickness in differentiating PXG from healthy controls.
• Bruch's membrane opening-minimum rim width (BMO-MRW) exhibited significantly lower AUCs compared to RNFL thickness, LC thickness, and LCCI in distinguishing PXG from PXS and healthy eyes.

Conclusions:

• LC thickness and LCCI offer robust diagnostic performance for differentiating PXG from PXS and healthy eyes.
• These parameters are comparable to RNFL thickness in diagnostic utility.
• BMO-MRW demonstrates inferior diagnostic performance among the evaluated geometric parameters.