Abstract
Purpose: To study the central corneal thickness, corneal curvature and axial length in patients with myopia.
Methods: 64 eyes of 32 myopic patients were included in this cross sectional study.Central corneal thickness, axial length and corneal curvature were measured using ultrasonic pachymeter, A SCAN ultrasonic instrument, auto refractometer respectively. Correlation between these three variables was analysed.
Results: The degree of myopia ranges from-0.5 to -16 D (3.5±3.0D). The mean CCT was 540.9±33.36µm. Mean axial length was 24.5±1.4mm. Mean corneal curvature was 44.08±1.35D. CCT showed a statistically significant positive correlation with degree of myopia (r=0.298, p=0.017), and axial length (r=0.276, p=0.027). A statistically significant negative correlation was found between axial length and corneal curvature (r= -0.443, p = <0.001). A statistically significant association was found between axial length and degree of myopia (p =<0.001). In this study, 31.3% were males and 68.7% were females. Mean age was 27.6±3.8 years. Axial length showed a statistically significant association with age and sex. However, CCT didn’t show any association with age and sex.
Conclusion: This study showed a statistically significant positive correlation between CCT, degree of myopia and axial length. CCT didn’t show any correlation with corneal curvature. CCT didn’t show any significant association with age and sex. Axial length showed a highly significant positive correlation with the degree of myopia and a statistically significant negative correlation with corneal curvature. Axial length showed a statistically significant association with age and sex.
Keywords: Central corneal thickness, axial length,corneal curvature, myopia.
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Corresponding Author
Chitra Raghavan
Associate professor, Regional Institute of Ophthalmology, Thiruvananthapuram-695001, India
Phone number: +91-9387803234, Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
DOI: https://dx.doi.org/10.18535/jmscr/v7i2.95
