Central Corneal Thickness in Children

Results: A total of 2079 children were included in the study, with ages ranging from birth to 17 years. Included were 807 whites, 494 Hispanics, and 474 African Americans, in addition to Asian, unknown race, and mixed-race individuals. African American children had thinner corneas on average than that of both white and Hispanic children (P .001 for both) by approximately 20 μm. Thicker median CCT was observed with each successive year of age from age 1 to 11 years, with year-toyear differences steadily decreasing and reaching a plateau after age 11 at 573 μm in white and Hispanic children and 551 μm in African American children. For every 100 μm of thicker CCT measured, the intraocular pressure was 1.5 mm Hg higher on average (P .001). For every diopter of increased myopic refractive error, CCT was 1 μm thinner on average (P .001).