title: Central corneal thickness in a Korean population: the Namil Study.
abstract: OBJECTIVE
  We investigated the distribution of central corneal thickness (CCT), and its association with age, sex, intraocular pressure (IOP), anterior chamber depth (ACD), axial length (AL), and the presence of systemic hypertension and diabetes in a Korean population.
  
  
  METHODS
  Our study is a population-based glaucoma prevalence study of residents aged ≥40 years in Namil-meon area, located in central South Korea. All subjects underwent a complete ophthalmic examination that included CCT measurement with an ultrasonic pachymeter, ACD and AL measurements by optical biometry, and Goldmann applanation tonometry. The right eye of all subjects was analyzed.
  
  
  RESULTS
  The mean (SD) CCT of the 1259 right eyes was 530.9 (31.5) μm. In univariate analysis, a thicker CCT was associated with a higher IOP (P < 0.001), a longer AL (P = 0.003), and a younger age (P < 0.001). ACD was not correlated significantly with CCT (P = 0.087). Men had a 5.7 μm higher CCT than women (age adjusted, P = 0.001). Subjects with hypertension had a 4.1 μm lower CCT than those without hypertension (age, sex-adjusted, P = 0.027), and the presence of diabetes was not associated significantly with CCT (age, sex-adjusted, P = 0.892). In multivariate analysis, a higher CCT was associated with a higher IOP (P < 0.001), younger age (P = 0.001), male sex (P = 0.005), and the absence of hypertension (P = 0.018).
  
  
  CONCLUSIONS
  The mean CCT of a Korean population was 530.9 μm. CCT was associated with IOP, age, sex, and hypertension.
authors.affiliation: Department of Ophthalmology, Konyang University, Kim's Eye Hospital, Myung-Gok Eye Research Institute, Seoul, Korea.
authors.forename: Young Hoon
authors.initials: YH
authors.lastname: Hwang
authors.forename: Hwang Ki
authors.initials: HK
authors.lastname: Kim
authors.forename: Yong Ho
authors.initials: YH
authors.lastname: Sohn
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000473:pathology; D044466:Asian People; D058452:Axial Length, Eye / Q000473:pathology; D003315:Cornea / Q000473:pathology*; D063171:Corneal Pachymetry; D003920:Diabetes Mellitus / Q000453:epidemiology / Q000503:physiopathology*; D005260:Female; D005901:Glaucoma / Q000453:epidemiology / Q000503:physiopathology*; D006068:Gonioscopy; D006801:Humans; D006973:Hypertension / Q000453:epidemiology / Q000503:physiopathology*; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D056910:Republic of Korea / Q000453:epidemiology; D017678:Sex Distribution; D014065:Tonometry, Ocular