Comparison Between Dynamic Contour Tonometry and Goldmann Applanation Tonometry.
- Author:
Jooeun LEE
1
;
Chang Hwan LEE
;
Jaewan CHOI
;
Sam Young YOON
;
Kyung Rim SUNG
;
Seong Bae PARK
;
Michael S KOOK
Author Information
- Publication Type:Original Article ; Comparative Study
- Keywords: Central corneal thickness; Dynamic contour tonometry; Goldmann applanation tonometry
- MeSH: Adult; Aged; Aged, 80 and over; Cornea/ultrasonography; Female; Glaucoma/*diagnosis/physiopathology; Humans; *Intraocular Pressure; Male; Microscopy, Acoustic/methods; Middle Aged; Predictive Value of Tests; Prospective Studies; Tonometry, Ocular/*methods; Young Adult
- From:Korean Journal of Ophthalmology 2009;23(1):27-31
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: To compare the intraocular pressures (IOPs) measured by dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT), and to investigate the association of IOPs on eyes of varying central corneal thickness (CCT). METHODS: In this prospective study, 451 eyes of 233 subjects were enrolled. IOPs were measured by GAT and DCT. CCT was measured three times and the average was calculated. Each eye was classified into one of three groups according to CCT: low CCT (group A, CCT<520 micrometer, n=146); normal CCT (group B, 520 micrometer < or = CT < or = 550 micrometer, n=163); and high CCT (group C, CCT>550 micrometer, n=142). In each group, we investigated the association of CCT with IOP measurement by GAT and DCT. RESULTS: The IOPs measured by GAT and DCT were significantly associated for all eyes (R=0.853, p<0.001, Pearson correlation). CCT was related with both IOP measurement by GAT and DCT with statistical significance (mixed effect model, p<0.001). However, subgroup analysis showed that CCT affected IOP measured by GAT for groups B and C, whereas it affected IOP measured by DCT only for group C. CONCLUSIONS: IOP measured by DCT was not affected by CCT in eyes with low to normal CCT, whereas this measurement was affected in eyes of high CCT range. CCT may have less effect on IOP measurements using DCT than those obtained by GAT, within a specified range of CCT.
