| Intraocular Pressure Measurements Using Dynamic Contour Tonometer After Photorefractive Keratectomy. |
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Hyun Joon Choi, Sun Woong Kim, Tae Im Kim, Eung Kweon Kim |
1National Health Insurance Corporation Ilsan Hospital, Gyeonggi, Korea.
2The Institute of Vision Research, Department of Ophthalmology, College of Medicine, Yonsei University, Seoul, Korea. eungkkim@yumc.yonsei.ac.kr |
| 굴절교정수술 환자에서 Dynamic Contour Tonometer를 이용한 안압 측정 |
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최현준1ㆍ김선웅2ㆍ김태임2ㆍ김응권2 |
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National Health Insurance Corporation Ilsan Hospital1, Gyeonggi, Korea / The Institute of Vision Research, Department of Ophthalmology, College of Medicine, Yonsei University2, Seoul, Korea |
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| Abstract |
PURPOSE
To assess the performance of the dynamic contour tonometer (DCT) in eyes undergoing excimer laser photorefractive keratectomy (PRK). METHODS: Intraocular pressure (IOP) was measured in 30 eyes after first time excimer laser PRK pre and three months post operatively using Goldmann applanation tonometer (GAT), noncontact air tonometer (NCT), and the DCT. RESULTS: There was significant correlation between central corneal thickness (CCT) and IOP measurements by GAT and NCT (CCT vs GAT: r2=0.31, p<0.01, CCT vs NCT: r2=0.39, p<0.01). However, the correlation between CCT and IOP measurements by DCT was not significant (CCT vs DCT: r2=0.14, p=0.32). After PRK, the mean change in CCT and IOP measurements using GAT, NCT, DCT were 73.70+/-26.92 micrometer (mean+/-SD), 2.43+/-2.86 mmHg (p<0.01), 3.83+/-2.34 mmHg (p<0.01) and 0.44+/-1.51 mmHg (p=0.125), respectively. The preoperative and postoperative DCT measurements did not differ significantly. CONCLUSIONS: The reduction in CCT induced by PRK doesn't appear to influence DCT measurements; therefore, DCT may be better suited over GAT or NCT for monitoring IOP in eyes that underwent refractive surgery. |
| Key Words:
Central corneal thickness;Pascal dynamic contour tonometer;Photorefractive keratectomy |
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