[Improvement and estimation of tearscopy potentials].

Area of Science:

• Ophthalmology
• Biomedical Engineering

Background:

• The tear film's lipid layer is crucial for ocular surface health.
• Assessing lipid layer thickness (LLT) and distribution is vital for diagnosing dry eye.
• Current tear film analysis methods may lack objectivity and detailed quantification.

Purpose of the Study:

• To present new potentials of an improved tearscopy technique using photoregistration of color interference.
• To introduce and evaluate the
• Lacrima
• software for objective tear film analysis.
• To assess lipid layer characteristics in healthy individuals and patients with dry eye syndrome.

Main Methods:

• Development of the
• Lacrima
• software for analyzing digital interference images of the precorneal tear film.
• Photoregistration of the color interference phenomenon for tear film analysis.
• Analysis of tear film lipid layer thickness (LLT) and distribution in 13 healthy subjects and 20 patients with exogenous dry eye syndrome.

Main Results:

• The
• Lacrima
• software objectively quantifies LLT and lipid distribution regularity.
• Eyes with dry eye syndrome showed increased uncertainty zones and zones with minimal LLT compared to healthy eyes.
• Relative areas of zones with increased LLT were significantly decreased in dry eye patients.

Conclusions:

• The improved tearscopy technique with
• Lacrima
• software significantly enhances the capability to assess tear film lipid layer status.
• Objective quantification of LLT and lipid distribution provides valuable data for diagnosing and managing dry eye.
• This technology offers a more detailed understanding of tear film abnormalities in dry eye disease.