Correlation between central corneal thickness and myopia in Taiwan
Yi-Chun Chen1, Toshimitsu Kasuga2, Hsin-Jui Lee1
1Department of Ophthalmology, Cathay General Hospital, Taipei, Taiwan.
The Kaohsiung Journal of Medical Sciences
|January 7, 2014
Summary
This study found no link between central corneal thickness (CCT) and myopia severity in Taiwanese adults. These findings on corneal thickness and refractive error are important for understanding glaucoma risk in myopia.
Area of Science:
- Ophthalmology
- Corneal Science
- Refractive Surgery
Background:
- Central corneal thickness (CCT) is a key ocular biometric parameter.
- Myopia, or nearsightedness, is a prevalent refractive error.
- Understanding the relationship between CCT and myopia is crucial for ocular health assessments, particularly concerning glaucoma risk.
Purpose of the Study:
- To investigate the correlation between central corneal thickness (CCT) and the degree of myopia in Taiwanese adults.
- To analyze the association between CCT and refractive error using both interindividual and intraindividual approaches.
- To contribute data to the discussion on CCT's role in glaucoma development among myopic individuals.
Main Methods:
- A cohort of 528 Taiwanese adults undergoing myopic laser refractive surgery was studied.
- Preoperative central corneal thickness (CCT) was measured using the Orbscan corneal topography system.
- Refractive status was determined by cycloplegic spherical equivalent; statistical analyses explored correlations.
Main Results:
- The mean age of participants was 34.8 years, with 79.9% being female.
- Mean refractive error was -7.27 diopters and mean CCT was 560 micrometers.
- No significant association was found between CCT and refractive error (p=0.49), even after adjusting for age and sex. CCT was significantly less in females than males (p=0.012).
Conclusions:
- There is no correlation between central corneal thickness (CCT) and the degree of myopia in the studied Taiwanese adult population.
- These findings suggest that CCT may not be a direct determinant of myopia severity in this demographic.
- The results have implications for understanding glaucoma risk factors in myopic individuals, indicating CCT is not a correlating factor for myopia degree.
