Central Corneal Thickness in Adult Non-Glaucomatous Blacks in South-Western Nigeria: a Hospital-Based Study
DOI:
https://doi.org/10.71637/tnhj.v25i1.1004Keywords:
Central corneal thickness, non-glaucomatous blacks, Osogbo, South-western NigeriaAbstract
Background: Central corneal thickness is an important measurement in glaucoma management, corneal refractive surgery and monitoring of corneal pathologies. It varies from place to place, even in the same country and race to race. There is a need to determine the peculiar central corneal thickness of blacks in different parts of the country.
Methods: The study was a cross-sectional study between January 2023 and July 2024 and included all consecutive adult non-glaucomatous patients aged 18 years and above with no systemic disease, corneal pathology, previous corneal surgery, or ocular trauma. Information obtained included age, sex, history of systemic disease, eye trauma, previous eye disease or surgery. They all had a comprehensive eye examination. Ultrasonic pachymetry was performed using PacScan digital biometry model 300AP plus with a composite probe.
Results: Three hundred and sixty-eight eyes of 184 participants were included in the study. The mean age was 58.9 years (SD±13.9) and a male:female ratio of 1.5:1. The mean CCT (± SD) was 525.0μm (±33.0) (males 528.8μm (± 39.0) and females 519.0 μm (±23.0). Majority, 254(69%) had thin cornea (less than 535μm) while 50(13.6%), 52 (14.1%), 12 (3.3%) had normal (CCT 535 -560μm), thick (CCT 561 -600μm) and very thick (CCT greater than 600μm) cornea respectively. There was a statistically significant association between CCT, age (P=0.012) and sex (P=0.001).
Conclusion: The study has shown that the majority of blacks in our environment have thin cornea. Practitioners must always remember this in glaucoma workups.
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