Repeatability Using Automatic Tracing with Canon OCT- HS100 and Zeiss Cirrus HD-OCT 5000

Area of Science:

• Ophthalmology
• Medical Imaging
• Biomedical Engineering

Background:

• Optical coherence tomography (OCT) provides high-resolution retinal images crucial for diagnosing and monitoring eye diseases.
• Accurate and repeatable measurements are essential for clinical applications of OCT in ophthalmology.
• Assessing the repeatability of OCT devices is vital for reliable patient care.

Purpose of the Study:

• To evaluate the repeatability of macular and optic disc measurements using Canon OCT-HS100 and Zeiss Cirrus HD-OCT 5000.
• To compare the repeatability of these two OCT instruments.
• To determine the impact of automatic tracking on measurement repeatability.

Main Methods:

• Repeatability analysis of macula and optic disc parameters from 30 healthy subjects using Canon and Zeiss OCT devices.
• Evaluation of repeatability using coefficient of repeatability (CR) and CR percentage of the mean (CR%).
• Comparison of measurements between the two OCT instruments.

Main Results:

• Coefficient of repeatability percentages (CR%) for optic disc parameters ranged from 0.90-22.22% (Canon) and 0.00-16.00% (Zeiss).
• CR% for macular parameters ranged from 0.62-2.81% (Canon) and 0.99-1.81% (Zeiss).
• Repeatability significantly improved with automatic tracking systems compared to previous data for both devices.

Conclusions:

• The automatic tracking function significantly improves measurement repeatability in both Canon and Zeiss OCT devices.
• Despite improved repeatability, measurements obtained from the Canon OCT-HS100 and Zeiss Cirrus HD-OCT 5000 are not interchangeable.
• Further research may be needed to understand the clinical implications of non-interchangeable OCT measurements.