Comparison of intraocular pressure readings with Perkins,Tonopen,iCare 200,and iCare Home to manometry in cadaveric eyes  

作　　者：Monica K Ertel Leonard K Seibold Jennifer L Patnaik Malik Y Kahook 

机构地区：[1]Department of Ophthalmology,University of Colorado,UC Health Sue Anschutz-Rodgers Eye Center,Aurora,Colorado 80045,USA

出　　处：《International Journal of Ophthalmology(English edition)》2022年第12期2022-2027,共6页国际眼科杂志（英文版）

摘　　要：AIM:To compare intraocular pressure(IOP)readings obtained with Perkins tonometry,i Care Home,i Care 200,and Tonopen to IOP readings obtained with the manometer of a perfusion system to assess the accuracy and reproducibility of each method of tonometry at set pressures.METHODS:The IOP of human cadaveric eyes(n=2)was measured using a manometer inserted into the eye through the optic nerve.IOP measurements were obtained using a Perkins tonometer,i Care Home,i Care 200,and Tonopen.These measurements were compared to set point IOP measurements of a manometer to determine accuracy and reproducibility of each device.RESULTS:Mean IOP readings obtained with the Perkins tonometer compared to manometer readings demonstrated a difference of-1.0±5.0 mm Hg(P=0.45),indicating a lower reading on average than manometery although not significant.Mean IOP difference between iCare 200 and manometer was 5.3±2.2 mm Hg(P<0.0001).Mean difference in IOP between iCare Home and manometer was 3.5±2.4 mm Hg(P=0.0004).Mean IOP difference compared to manometer was 4.6±4.0 mm Hg for the Tonopen(P<0.0001).IOP measurements obtained with the Perkins tonometer demonstrated a standard deviation of 5.0 mm Hg while the Tonopen measurements demonstrated a 4.0 mm Hg standard deviation.In comparison,iCare 200 and iCare Home demonstrated 2.2 and 2.4 mm Hg standard deviation,respectively.CONCLUSION:Applanation tonometry produces more accurate IOP readings than rebound tonometry or Tonopen,however it demonstrates greater variability than the other forms of tonometry.Rebound tonometry is more reproducible but tends to over-estimate IOP.

关 键 词：intraocular pressure ocular tonometry MANOMETRY 

分 类 号：R770.4[医药卫生—眼科]