Mohan Shalini, Tiwari Satyaprakash, Jain Arvind, Gupta Jaya, Sachan Surendra Kumar
Glaucoma Services, Department of Ophthalmology, GSVM Medical College, Kanpur, UP, India.
Glaucoma Services, Department of Ophthalmology, GSVM Medical College, Kanpur, UP, India.
J Optom. 2014 Apr-Jun;7(2):86-90. doi: 10.1016/j.optom.2013.06.002. Epub 2013 Jul 26.
Goldmann applanation tonometer (GAT) is the gold standard for Intraocular Pressure (IOP) measurement but has disadvantage of being contact device and problems with portability. The aim of the study was to compare the Keeler's Pulsair noncontact tonometer (NCT) with GAT in Indian Population.
Eighty-one subjects were screened from a Glaucoma clinic of a tertiary care centre in North India. The IOP was measured by Pulsair NCT and GAT after explaining the procedure. Central corneal thickness (CCT) was measured to avoid its bias on IOP readings. The data were analyzed using SPSS software.
The mean age of subjects was 49.9±8.8 (mean±SD) years. The mean IOP as taken by Pulsair NCT was 15.79±4.07mmHg and that for GAT was 17.02±4.23mmHg (p=0.062). The mean CCT was 0.536±0.019mm. A positive Pearson's correlation coefficient of 0.909 (p=0.0001) was found between the two instruments. Bland and Altmann analysis showed a fair agreement between the two tonometers at lower IOP range.
Pulsair NCT can be used as a screening tool for community practices but is not reliable in the subjects with higher IOP range.
Goldmann压平眼压计（GAT）是测量眼压（IOP）的金标准，但它是一种接触式设备，存在便携性问题。本研究的目的是在印度人群中比较Keeler的Pulsair非接触眼压计（NCT）与GAT。
从印度北部一家三级护理中心的青光眼诊所筛选出81名受试者。在解释测量过程后，使用Pulsair NCT和GAT测量眼压。测量中央角膜厚度（CCT）以避免其对眼压读数的偏差。使用SPSS软件对数据进行分析。
受试者的平均年龄为49.9±8.8（均值±标准差）岁。Pulsair NCT测得的平均眼压为15.79±4.07mmHg，GAT测得的平均眼压为17.02±4.23mmHg（p = 0.062）。平均CCT为0.536±0.019mm。两种仪器之间的Pearson相关系数为0.909（p = 0.0001）。Bland和Altmann分析表明，在较低眼压范围内，两种眼压计之间具有较好的一致性。
Pulsair NCT可作为社区实践的筛查工具，但在眼压较高的受试者中不可靠。
