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Year : 2020  |  Volume : 32  |  Issue : 1  |  Page : 45-50

Relationship between myopia and central corneal thickness – A hospital based study from South India

Department of Ophthalmology, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India

Correspondence Address:
Dr. K Divya
Department of Ophthalmology, PSG Institute of Medical Sciences and Research, Coimbatore - 641 004, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/kjo.kjo_95_19

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Background and Purpose: The prevalence of myopia has been increasing steadily, and studies on the relationship between myopia and central corneal thickness (CCT) have shown conflicting results. The purpose of this study was to investigate the relationship between myopia and CCT in a hospital based population from South India. Materials and Methods: This prospective, cross-sectional study was carried out from a tertiary care institution in South India between January 2017 and June 2018. One hundred and ninety-four myopic individuals between 11 and 40 years of age with spherical equivalent (SE) ranging from -0.5 to -6 Diopters after cycloplegic refraction were enrolled in the study. CCT was measured in both eyes of each patient using Tomey EM-3000 noncontact specular microscope (Tomey Corporation, Nagoya, Japan). The relation between CCT and myopia was analyzed using Pearson's correlation coefficient. Statistical significance was set at P < 0.05. Results: A total of 388 eyes were analyzed. 50% (n=97) of study participants were females. The mean age of the study participants was 25.47 ± 7.25 years (range: 12–40 years). The mean SE was −-2.79±1.34 D (range: -0.5 to -6.0 D). The mean CCT was 540.53 ± 56.16 μm (range: 441–664 μm). No significant association was observed between CCT and age or gender of the study participants (P = 0.706 and 0.550, respectively). No correlation was observed between mean CCT and SE (Pearson, r = 0.095,P = 0.062). Conclusion: There was no correlation between CCT and degree of myopia. These data contribute to the ongoing discussion on the structural alterations in ocular coats and susceptibility to glaucoma in myopia.

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