A Comparative Study of Rebound Tonometry With Tonopen and Goldmann Applanation Tonometry Following Vitreoretinal Surgery

• Published in: American journal of ophthalmology 2016, Vol.161, p.22-28.e8
• Main Authors: Grewal, Dilraj S, Stinnett, Sandra S, Folgar, Francisco A, Schneider, Eric W, Vajzovic, Lejla, Asrani, Sanjay, Freedman, Sharon F, Mruthyunjaya, Prithvi, Hahn, Paul
• Format: Article
• Language: English
• Subjects: Aged; Defects; Edema; Eye surgery; Female; Glaucoma; Humans; Intraocular Pressure - physiology; Male; Middle Aged; Ophthalmology; Patients; Postoperative period; Reproducibility of Results; Surgery; Tonometry, Ocular - instrumentation; Tonometry, Ocular - standards; Vitreoretinal Surgery
• ISSN: 0002-9394; 1879-1891
• DOI: 10.1016/j.ajo.2015.09.022

Purpose To investigate agreement in intraocular pressure (IOP) measurements among Icare rebound tonometry, Tonopen tonometry, and Goldmann applanation tonometry following vitreoretinal surgery. Design Reliability analysis of tonometers. Methods Fifty-eyes of 50 adults undergoing vitreoretinal surgery were enrolled. IOP was measured on first postoperative day using Icare (Tiolat, Helsinki, Finland), followed by Tonopen (Reichert, Depew, New York, USA) and Goldmann (Haag-Streit USA, Mason, Ohio, USA) in randomized order. Intraclass correlation coefficients (ICC) and Bland-Altman plots were calculated for all subcategories. Results Icare successfully measured IOP in all eyes, while Goldmann was unmeasurable in 6 eyes (12%) and Tonopen in 1 eye (2%). Mean IOP by Icare, Tonopen, and Goldmann was 15.9 ± 8.9, 16.9 ± 6.2, and 16.0 ± 7.3 mm Hg, respectively ( P  = .76). Type of intraocular tamponade, status of lens, status of cornea, gauge of instrumentation, and history of prior vitrectomy did not result in significant differences among the 3 tonometers. ICC was excellent (>0.75) in all subgroups, except at IOP