굴절교정수술 환자에서 Dynamic Contour Tonometer를 이용한 안압 측정

Intraocular Pressure Measurements Using Dynamic Contour Tonometer After Photorefractive Keratectomy

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&#8208;time excimer laser PRK pre&#8208; and three months post&#8208;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 μm (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.