Leiva M, Naranjo C, Peña M T
Departament de Medicina i Cirurgia Animal, Facultat de, Veterinaria, Edifici V, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, España.
Vet Ophthalmol. 2006 Jan-Feb;9(1):17-21. doi: 10.1111/j.1463-5224.2005.00429.x.
To compare intraocular pressure (IOP) measurements obtained by recently introduced rebound tonometer (ICare) and the well-known applanation tonometer Tonopen XL in normal canine eyes.
In a prospective, randomized, single-center study, IOP measurements by ICare and Tonopen XL tonometers were compared in 160 nonpathologic canine eyes (80 dogs). Complete slit-lamp biomicroscopy and indirect ophthalmoscopy were performed on each dog. Rebound tonometry was performed first and immediately after topical anesthetic drops were instilled in both eyes. One minute after the application of the topical anesthetic, applanation tonometry was performed in both eyes. The intraocular pressures obtained by use of both techniques were compared by statistical analysis.
The mean IOP readings were 9.158 mmHg (SD 3.471 mmHg) for the ICare tonometer (x) and 11.053 mmHg (SD 3.451 mmHg) for the Tonopen XL readings (y). The mean difference in intraocular pressures (-1.905 mmHg) was within clinically acceptable limits. The correlation coefficient (r2) of the relationship within both tonometers was r2=0.7477. The corresponding linear regression between the tonometers readings was y=0.6662x+4.942.
Intraocular pressures obtained with the ICare rebound tonometer were concordant with the IOP readings obtained by applanation Tonopen XL, but ICare values were significantly (P<0.0001) lower. Rebound tonometry could be an appropriate tonometry method for routine clinical use after its calibration for canine eyes.
比较最近推出的回弹式眼压计（ICare）和著名的压平式眼压计Tonopen XL在正常犬眼中所测得的眼压。
在一项前瞻性、随机、单中心研究中，对160只非病理性犬眼（80只犬）使用ICare眼压计和Tonopen XL眼压计测量眼压进行比较。对每只犬进行完整的裂隙灯生物显微镜检查和间接检眼镜检查。先进行回弹式眼压测量，然后立即在双眼滴入表面麻醉剂。滴入表面麻醉剂一分钟后，对双眼进行压平式眼压测量。通过统计分析比较两种技术所测得的眼压。
ICare眼压计测得的平均眼压读数为9.158 mmHg（标准差3.471 mmHg）（x），Tonopen XL测得的读数为11.053 mmHg（标准差3.451 mmHg）（y）。眼压的平均差值（-1.905 mmHg）在临床可接受范围内。两种眼压计测量结果之间的相关系数（r2）为r2 = 0.7477。眼压计读数之间相应的线性回归为y = 0.6662x + 4.942。
使用ICare回弹式眼压计测得的眼压与使用压平式Tonopen XL测得的眼压读数一致，但ICare测得的值显著更低（P < 0.0001）。回弹式眼压测量法在针对犬眼进行校准后，可能是一种适用于常规临床的眼压测量方法。
