Ang Robert Edward T, Bargas Neiman Vincent R, Martinez Gladness Henna A, Sosuan George Michael N, Nabor-Umali Maria Isabel
Department of Ophthalmology, Cardinal Santos Medical Center, San Juan City, Metro Manila, Philippines.
Cornea and Refractive Surgery Service, Asian Eye Institute, Makati City, Metro Manila, Philippines.
Clin Ophthalmol. 2022 May 27;16:1623-1637. doi: 10.2147/OPTH.S362344. eCollection 2022.
To compare the intraocular pressure (IOP) obtained by Goldmann applanation tonometer (GAT), correcting applanation tonometer surface (CATS) and biomechanically corrected IOP (bIOP) of Corvis ST tonometer (CVS); and to determine the effects of manifest refraction spherical equivalent (MRSE), central corneal thickness (CCT) and mean corneal curvature (Km) on the IOP measurements of corneal refractive patients.
This was a single-center, retrospective, cross-sectional study of 120 eyes of 64 patients from May 1, 2020 to June 1, 2021 who underwent laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK). The level of agreement between the three tonometers was evaluated, and correlation between parameters was calculated using Pearson correlation.
Mean preoperative to postoperative IOP in LASIK and PRK was 15.1 ± 3 to 11.3 ± 2.1 and 14.4 ± 2.6 to 12.1 ± 3 using GAT, 16.4 ± 2.8 to 13.1 ± 2.3 and 15.9 ± 2.6 to 13.7 ± 3 using CATS and 14.8 ± 2.4 to 12.9 ± 1.5 and 14.2 ± 2.4 to 12.6 ± 1.9 using CVS-bIOP. Preoperative IOP correlation between each tonometer pair showed that the lowest mean difference was between GAT and CVS-bIOP (0.32 in LASIK, 0.15 in PRK). Preoperative to postoperative IOP correlation of each tonometer resulted in a difference of 3.77, 2.30 in GAT; 3.32, 2.28 in CATS and 1.88, 1.62 in CVS-bIOP in the LASIK and PRK groups, respectively. Percentage change in CCT and Km was not correlated while change in MRSE had a weak relationship with percentage change in CVS-bIOP.
Preoperatively, GAT and CVS-bIOP had the best agreement in IOP measurements. CATS recorded the highest IOP preoperatively and postoperatively. IOP decreased in the three tonometers after LASIK and PRK with GAT having the largest decrease. CVS-bIOP had the lowest change between preoperative and postoperative IOP measurements. Only percentage change in MRSE was correlated with percentage change in CVS-bIOP in the LASIK group.
比较Goldmann压平眼压计（GAT）、校正压平眼压计表面（CATS）和Corvis ST眼压计（CVS）的生物力学校正眼压（bIOP）所测得的眼压；并确定明显屈光球镜当量（MRSE）、中央角膜厚度（CCT）和平均角膜曲率（Km）对角膜屈光手术患者眼压测量的影响。
这是一项单中心、回顾性横断面研究，研究对象为2020年5月1日至2021年6月1日期间接受准分子原位角膜磨镶术（LASIK）或准分子激光角膜切削术（PRK）的64例患者的120只眼。评估了三种眼压计之间的一致性水平，并使用Pearson相关性计算参数之间的相关性。
使用GAT测量，LASIK和PRK术前至术后平均眼压分别为15.1±3至11.3±2.1以及14.4±2.6至12.1±3；使用CATS测量分别为16.4±2.8至13.1±2.3以及15.9±2.6至13.7±3；使用CVS - bIOP测量分别为14.8±2.4至12.9±1.5以及14.2±2.4至12.6±1.9。各眼压计对术前眼压的相关性显示，GAT和CVS - bIOP之间的平均差异最小（LASIK中为0.32，PRK中为0.15）。LASIK和PRK组中，各眼压计术前至术后眼压的相关性导致GAT的差异分别为3.77、2.30；CATS的差异分别为3.32、2.28；CVS - bIOP的差异分别为1.88、1.62。CCT和Km的百分比变化无相关性，而MRSE的变化与CVS - bIOP的百分比变化有弱相关性。
术前，GAT和CVS - bIOP在眼压测量方面一致性最佳。CATS术前和术后记录的眼压最高。LASIK和PRK术后三种眼压计测得的眼压均下降，其中GAT下降幅度最大。CVS - bIOP术前和术后眼压测量的变化最小。在LASIK组中，仅MRSE的百分比变化与CVS - bIOP的百分比变化相关。
