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Corneal higher-order aberrations in phlyctenular keratitis.
Taiichiro Katayama1, Yukari Yagi-Yaguchi1, Osama Ibrahim1
1Department of Ophthalmology, Tokyo Dental College Ichikawa General Hospital, 5-11-13, Sugano, Ichikawa, Chiba, 272-8513, Japan.
Japanese Journal of Ophthalmology
|July 20, 2020
Summary
Corneal scarring from phlyctenular keratitis causes significant higher-order aberrations (HOAs), impacting vision. Ectasia and asymmetric patterns were most common, with HOAs correlating to reduced visual acuity.
Area of Science:
- Ophthalmology
- Corneal Imaging
- Vision Science
Background:
- Phlyctenular keratitis can lead to corneal scarring, potentially affecting visual function.
- Understanding the tomographic changes and higher-order aberrations (HOAs) associated with this scarring is crucial for patient management.
Purpose of the Study:
- To characterize tomographic patterns in eyes with corneal scars from phlyctenular keratitis.
- To quantify corneal HOAs and evaluate their correlation with visual acuity.
Main Methods:
- Retrospective analysis of 51 eyes with corneal scars due to phlyctenular keratitis.
- Anterior segment optical coherence tomography (AS-OCT) used to measure HOAs and classify tomographic patterns.
- Correlation analysis between HOAs, visual acuity, and other corneal parameters.
Main Results:
- Ectasia (31.4%) and asymmetric patterns (23.5%) were the most frequent tomographic findings.
- Corneal HOAs were significantly elevated compared to normal controls.
- LogMAR visual acuity showed significant correlations with corneal HOAs and central corneal thickness.
Conclusions:
- Ectasia and asymmetric patterns are common tomographic changes in phlyctenular keratitis-induced corneal scars.
- Elevated corneal HOAs are associated with decreased visual acuity in these patients.
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