Does Dry Eye Affect Repeatability of Corneal Topography Measurements?

Area of Science:

• Ophthalmology
• Optometry
• Biomedical Engineering

Background:

• Dry eye syndrome can affect ocular surface health.
• Accurate corneal measurements are crucial for diagnosis and treatment.
• Corneal topography provides detailed mapping of the cornea's surface.

Purpose of the Study:

• To evaluate the repeatability of corneal topography measurements.
• To compare measurement consistency between dry eye patients and healthy controls.
• To determine the clinical and research reliability of the Sirius corneal topography system.

Main Methods:

• Consecutive corneal topography measurements were performed using the Sirius system.
• Parameters included corneal thickness, aqueous depth, curvature, and anterior chamber metrics.
• Repeatability was quantified using the intra-class correlation coefficient (ICC).

Main Results:

• Thirty-three dry eye patients and 40 healthy controls participated.
• No significant differences in age or gender distribution between groups.
• All evaluated topography parameters exhibited excellent repeatability (ICC > 0.90) in both groups.

Conclusions:

• The Sirius corneal topography system provides highly repeatable anterior segment measurements.
• These measurements are reliable for both clinical practice and research involving dry eye patients.
• The system's consistency supports its use in managing ocular surface conditions.