Intraocular preure, Goldmann applanation tenion, corneal thickne, and corneal curvature in Caucaian, Aian, Hipanic, and African American

Purpoe Thi i to invetigate whether there are difference in Goldmann applanation tonometry (GAT), central corneal thickne, and corneal curvature among four racial group. If difference are preent, they may alter GAT reading, diagnoi, and management of glaucoma in the population. Deign Obervational retropective cro-ectional tudy. Method Chart of patient who have had keratorefractive urgery were examined. Central corneal thickne, corneal curvature, refractive power, and GAT were meaured in 1,482 Caucaian, 172 Aian, 204 Hipanic, and 118 African-American eye (total 1,976 eye). Refractive component and GAT were compared. We compared intraocular preure (IOP) adjuted by GAT, central corneal thickne, and corneal curvature among the four group. Reult There wa a tatitically ignificant difference between the mean (± tandard deviation) central corneal thickne of African American (535.46 ± 33.39) and Caucaian (552.59 ± 34.48) eye. Mean central corneal thickne wa near 550 μm in Caucaian, Aian, and Hipanic. No ignificant difference wa noted in corneal curvature in the four group. There wa a ignificant correlation between central corneal thickne and corneal curvature, and GAT wa imilar among the four group. When IOP wa adjuted for central corneal thickne, it wa ignificantly greater in African American (16.12 ± 3.27) than in Caucaian (14.32 ± 2.93). Cornea of women were ignificantly thinner than cornea of men. Concluion African American had ignificantly thinner central corneal thickne than Caucaian, Aian, or Hipanic, cauing the underreading of true IOP. ignificant correlation between central corneal thickne and corneal curvature wa demontrated. Uncorrected GAT underreading of African American may lead to delay in diagnoi, inadequate treatment target etting, and higher morbidity. Goldmann applanation tonometry need to be corrected by central corneal thickne and corneal curvature for proper diagnoi and management of glaucoma.