RT Journal Article
A1 Toro, Patricia
A1 Mendez-Hernandez, Carmen Dora
A1 Fernandez-Vidal, Ana
A1 Martinez-Chico, Raquel
A1 Perez-Trigo, Silvia
A1 Saenz-Frances, Federico
A1 Diaz-Valle, David
A1 Martinez-de-la-Casa, Jose Maria
A1 Santos, Enrique
A1 Garcia-Feijoo, Julian
T1  Comparison Of Intraocular Pressure Measurement Using Goldmann, Iopen And Icare Tonometers In Patients With Penetrating Keratoplasty
JF Investigative Ophthalmology & Visual Science
JO Invest. Ophthalmol. Vis. Sci.
YR 2012
VO 53
IS 14
SP 5087
OP 5087
SN 1552-5783
AB    To compare Rebound, iCare and Iopen intraocular pressure (IOP) measurements with Goldmann applanation tonometry (GAT) in post-keratoplasty corneas, and to assess the influence of central corneal thickness (CCT), corneal curvature (CC), astigmatism, and time after PKP on IOP measurement.    This cross-sectional study included one eye of 53 post-penetrating keratoplasty (PK) patients. All subjects underwent GAT, iCare and Iopen IOP measurements in random order, and CCT, CC and astigmatism evaluation. The Bland-Altman method and multivariate regression analysis were used to assess inter-tonometer agreement and the influence of CCT, CC and astigmatism on IOP.    iCare underestimated IOP compared with GAT (GAT minus iCare 1.93±7.03mmHg, (95% C.I. -0.86-3.96)). Iopen significantly underestimated IOP compared with GAT (GAT minus Iopen 3.59 ±9.08 mmHg (95% C.I. 0.98 - 6.19)). There was no significant relation between IOP and CCT, CC, astigmatism, or time after PKP. In 49 of 52 of the patients IOP measurements with GAT were reliable. There were no difficulties in obtaining measurements with either iCare or Iopen tonometries.    Agreement between GAT and iCare was clinically optimal. No agreement was found between GAT and Iopen. GAT, iCare and Iopen measurements were not affected by CCT, CC, astigmatism, or time after PKP. iCare may be closer to providing a real IOP post-PK, and may be an alternative when GAT is not possible. However, Iopen measurements have to be taken cautiously bearing in mind the difference obtained with both methods.  
RD 7/26/2021