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Published on: March 26, 2020
Choroidal thinning in high myopia measured by optical coherence tomography
Yasushi Ikuno1, Satoko Fujimoto, Yukari Jo
1Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan.
Clinical Ophthalmology (Auckland, N.Z.)
|May 23, 2013
Summary
Highly myopic eyes may experience gradual choroidal thinning, influenced by factors like location and axial length. Overall choroidal thickness did not significantly change, warranting further investigation.
Area of Science:
- Ophthalmology
- Retinal imaging
- Myopia research
Background:
- High myopia is a significant risk factor for various ocular pathologies.
- Choroidal thickness is a key indicator of ocular health and can be affected by refractive error.
- Understanding choroidal changes in myopia is crucial for predicting disease progression.
Purpose of the Study:
- To investigate the rate of choroidal thinning in highly myopic eyes.
- To identify factors influencing choroidal thickness changes over time.
Main Methods:
- Retrospective observational study of 37 eyes from 26 high myopic subjects.
- Spectral domain optical coherence tomography (SD-OCT) used for measurements.
- Choroidal thicknesses (CTs) measured at baseline and 1-year follow-up.
Main Results:
- Choroidal thickness reduction per year (CTRPY) showed no significant difference across locations, except for a significant decrease superiorly.
- Superior CTRPY was negatively correlated with axial length.
- Axial length and age were identified as relevant factors for CTRPY.
Conclusions:
- The highly myopic choroid may gradually thin, influenced by multiple factors.
- Location and axial length are key regulators of choroidal thinning rate.
- Further long-term studies are necessary to fully understand these changes.
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