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Ciliary body thickness increases with increasing axial myopia
Cristiano Oliveira1, Celso Tello, Jeffrey M Liebmann
1Department of Ophthalmology, The New York Eye and Ear Infirmary, New York, New York 10003, USA.
American Journal of Ophthalmology
|August 10, 2005
Summary
Ciliary body thickness increases with myopia and axial length, suggesting a link between ocular structures and refractive error. This finding aids in understanding myopia progression.
Area of Science:
- Ophthalmology
- Optometry
- Biomedical Optics
Background:
- Refractive error, including myopia, is a significant global health concern.
- Understanding the ocular structures influencing refractive error is crucial for developing effective interventions.
- The ciliary body's role in refractive error development requires further investigation.
Purpose of the Study:
- To investigate the association between ciliary body thickness (CBT) and refractive error.
- To determine if CBT correlates with axial length in a cohort of patients.
Main Methods:
- A prospective observational case series involving 75 eyes of 75 patients.
- Axial length measured using A-scan ultrasonography.
- Ciliary body thickness (CBT2 and CBT3) measured via ultrasound biomicroscopy (UBM) at specific posterior distances from the scleral spur.
Main Results:
- A significant inverse correlation was found between refractive error and CBT (r = -.64 for CBT2, r = -.52 for CBT3).
- Axial length showed a significant positive correlation with CBT (r = .66 for CBT2, r = .57 for CBT3).
- Statistical significance was achieved for all correlations (P < .0001).
Conclusions:
- Ciliary body thickness is positively associated with increasing myopia and axial length.
- These findings suggest CBT is a potential biomarker for refractive error progression.
- Further research can explore the ciliary body's dynamic role in emmetropization and myopization.