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[Margin reflex distance measure by computerized image processing in rigid contact lens wearers]
Tiana Gabriela Burmann1, Fabiana Borba Valiatti, Zélia Maria Correa
1Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil. tianaburmann@terra.com.br
Arquivos Brasileiros De Oftalmologia
|April 15, 2008
Summary
This study introduces a new computerized method to measure margin reflex distance (MRD) in rigid contact lens wearers. While not statistically significant, MRD tended to decrease in lens wearers, showing greater variability.
Area of Science:
- Ophthalmology
- Optometry
- Biomedical Engineering
Context:
- Rigid contact lens wear is common, and monitoring ocular parameters is crucial.
- Accurate measurement of margin reflex distance (MRD) is important for assessing eyelid function and lens fit.
- Existing methods for MRD measurement may lack precision or accessibility.
Purpose:
- To introduce and evaluate a novel, computer-based method for measuring margin reflex distance (MRD).
- To compare MRD in individuals wearing rigid contact lenses versus a control group.
- To assess the feasibility and accuracy of computerized image processing for MRD analysis.
Summary:
- A new, accessible method using computerized image processing was developed to measure MRD.
- The study compared MRD in 63 rigid contact lens wearers and 30 controls.
- Average MRD was 2.46 mm in lens wearers and 2.72 mm in controls, with greater variability in the lens-wearing group.
Impact:
- The developed method offers a simple and potentially more accurate approach for MRD measurement.
- This technique can aid in the follow-up of margin reflex distance in contact lens wearers, particularly rigid lens users.
- Improved MRD monitoring may contribute to better contact lens fitting and patient care.
