| Comparison of Dynamic Contour Tonometry and Goldmann Applanation Tonometry in Relation to Central Corneal Thickness. |
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Min Kyo Kim, Si Yoon Park, Chan Yun Kim, Ji Hyun Kim |
1Siloam Eye Hospital, Seoul, Korea. jhkim32@daum.net
2The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea. |
| Dynamic Contour Tonometry 및 골드만 압평 안압계와 중심각막두께의 관계 |
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김민교1,2⋅박시윤2⋅김찬윤2⋅김지현1 |
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실로암안과병원1, 연세대학교 의과대학 안과학교실 시기능개발연구소2 |
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Received: 20 March 2015 • Revised: 11 May 2015 • Accepted: 10 July 2015 |
| Abstract |
PURPOSE
In this study we compared the intraocular pressures (IOPs) measured using dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) and investigated the correlation between central corneal thickness (CCT) and IOP. METHODS: In a prospective study, 178 eyes of 91 subjects with glaucoma and glaucoma suspect were enrolled. IOP was measured using DCT and GAT and CCT was measured using ultrasound pachymetry. Each eye was classified into 1 of 3 groups according to their CCT: low CCT (Group A; CCT < 525 microm), normal CCT (Group B; 525 < or = CCT < 561 microm), and high CCT (Group C; CCT > or = 561 microm). In each group, we investigated the correlation between CCT and IOP measurement using GAT and DCT. RESULTS: A significant correlation was found between CCT and IOP measured using GAT (p < 0.001), but not between CCT and IOP measured using DCT (p = 0.108) in all patients. Subgroup analysis showed that CCT affected IOP measured with GAT only in Group A (p = 0.027) and IOP measured with DCT was not affected by CCT in all 3 groups. CONCLUSIONS: IOP measured using GAT and DCT were significantly affected by CCT, especially when the CCT was low. CCT may have no effect on DCT thus, IOP measured using DCT is more reliable than GAT in patients with thin corneas. |
| Key Words:
Central corneal thickness;Dynamic contour tonometry;Glaucoma;Goldmann applanation tonometry |
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