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Objective quantification of corneal haziness using anterior segment optical coherence tomography
Jeyanth Suresh Rose1, Juliet Eldrina1, Aarwin Joshua2
1Department of Ophthalmology, Christian Medical College, Vellore, India.
Journal of Current Ophthalmology
|March 23, 2018
Summary
Anterior segment optical coherence tomography (AS-OCT) can quantify corneal transparency by measuring average pixel intensity. This metric significantly varies with the severity of corneal opacities.
Area of Science:
- Ophthalmology
- Medical Imaging
- Biomedical Optics
Background:
- Corneal transparency is crucial for vision.
- Quantifying corneal opacity severity is important for diagnosis and treatment.
- Anterior segment optical coherence tomography (AS-OCT) is a non-invasive imaging technique.
Purpose of the Study:
- To quantify normal corneal transparency using AS-OCT by measuring average pixel intensity.
- To analyze how average pixel intensity varies in mild and severe corneal opacities.
Main Methods:
- Observational, cross-sectional study involving 38 eyes from 19 patients.
- AS-OCT imaging was performed on eyes with mild/severe corneal opacities and their contralateral normal corneas.
- Average pixel intensity was calculated using MATLAB software.
Main Results:
- The average pixel intensity of normal corneas was 99.6 ± 10.9.
- Mild and severe corneal opacities showed average pixel intensities of 115.5 ± 9.1 and 141.1 ± 10.3, respectively.
- Statistically significant differences were observed in average pixel intensity across groups.
Conclusions:
- AS-OCT imaging is a viable method for quantifying corneal transparency.
- Average pixel intensity serves as a significant indicator that correlates with the degree of corneal opacification.
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