Correlation between Optic Nerve Parameters Obtained Using 3D Nonmydriatic Retinal Camera and Optical Coherence...

Area of Science:

• Ophthalmology
• Medical Imaging
• Glaucoma Research

Background:

• Accurate glaucoma diagnosis relies on assessing optic nerve damage.
• Stereometric parameters from imaging technologies can quantify optic disc changes.
• The Disc Damage Likelihood Scale (DDLS) is used to grade glaucomatous damage.

Purpose of the Study:

• To compare stereometric parameters from 3D optic disc photography and OCT.
• To evaluate interobserver agreement on the DDLS using these imaging modalities.
• To assess the impact of a training module on resident performance in DDLS scoring.

Main Methods:

• Retrospective analysis of 190 eyes (normal, glaucoma suspect, glaucomatous).
• DDLS scoring by residents before and after a training module.
• Correlation analysis between DDLS scores and parameters from 3D optic disc photography and OCT.

Main Results:

• Moderate agreement (kappa=0.59) between 3D photography DDLS and glaucoma specialist scores.
• Training significantly improved resident agreement and interobserver concordance on DDLS.
• Poorest interobserver agreement observed at DDLS stages 5 and 6.
• Glaucoma specialist DDLS scores demonstrated high predictability (0.941).

Conclusions:

• 3D optic disc photography is a valuable tool for glaucoma diagnosis.
• Supervised training enhances interobserver agreement on the DDLS among trainees.
• Caution is advised for DDLS stages 5 and 6 due to lower agreement.