Comparison of Goldmann Applanation Tonometer, Noncontact Tonometer, and TonoPen XL for Intraocular Pressure Measurement in Different Types of Glaucomatous, Ocular Hypertensive, and Normal Eyes

REFERENCES

• Katz LJ, Spaeth GL, Cantor LB, et al. Reversible optic disk cupping and visual field improvement in adults with glaucoma. Am J Ophthalmol. 1989;107:485–492.
   PubMed Web of Science ®Google Scholar
• O’Brien C, Schwartz B, Takamoto T, et al. Intraocular pressure and the rate of visual field loss in chronic open-angle glaucoma. Am J Ophthalmol. 1991;111:491–500.
   PubMed Web of Science ®Google Scholar
• Boothe WA, Lee DA, Panek WC, et al. The Tono-Pen. A manometric and clinical study. Arch Ophthalmol. 1988;106:1214–1217.
   PubMedGoogle Scholar
• Frenkel RE, Hong YJ, Shin DH. Comparison of the Tono-Pen to the Goldmann applanation tonometer. Arch Ophthalmol. 1988;106:750–753.
   PubMedGoogle Scholar
• Hessemer V, Rossler R, Jacobi KW. [Tono-pen, a new position-independent tonometer. Comparison with the Goldmann tonometer by applanation measurement]. Klin Monbl Augenheilkd. 1988;193:420–426.
   PubMedGoogle Scholar
• Iester M, Mermoud A, Achache F, et al. New Tonopen XL: Comparison with the Goldmann tonometer. Eye (Lond). 2001;15:52–58.
   PubMed Web of Science ®Google Scholar
• Forbes M, Pico G, Jr., Grolman B. A noncontact applanation tonometer. Description and clinical evaluation. Arch Ophthalmol. 1974;91:134–140.
   PubMedGoogle Scholar
• Popovich KS, Shields MB. A comparison of intraocular pressure measurements with the XPERT noncontact tonometer and Goldmann applanation tonometry. J Glaucoma. 1997;6:44–46.
   PubMed Web of Science ®Google Scholar
• Shields MB. The non-contact tonometer. Its value and limitations. Surv Ophthalmol. 1980;24:211–219.
   PubMed Web of Science ®Google Scholar
• Graf M. [Significance of the corneal thickness in non-contact tonometry]. Klin Monbl Augenheilkd. 1991;199:183–186.
   PubMedGoogle Scholar
• Tonnu PA, Ho T, Newson T, et al. The influence of central corneal thickness and age on intraocular pressure measured by pneumotonometry, non-contact tonometry, the Tono-Pen XL, and Goldmann applanation tonometry. Br J Ophthalmol. 2005;89:851–854.
   PubMed Web of Science ®Google Scholar
• Rao VJ, Gnanaraj L, Mitchell KW, et al. Clinical comparison of ocular blood flow tonometer, Tonopen, and Goldmann applanation tonometer for measuring intraocular pressure in postkeratoplasty eyes. Cornea. 2001;20:834–838.
   PubMed Web of Science ®Google Scholar
• Phelps CD, Phelps GK. Measurement of intraocular pressure: A study of its reproducibility. Albrecht Von Graefes Arch Klin Exp Ophthalmol. 1976;198:39–43.
   PubMedGoogle Scholar
• Nunnally JC. Psychometric Theory, 2nd ed. New York, NY: McGraw-Hill Book Company, 1978; pp. 50–58.
   Google Scholar
• Francis BA, Hsieh A, Lai MY, et al. Effects of corneal thickness, corneal curvature, and intraocular pressure level on Goldmann applanation tonometry and dynamic contour tonometry. Ophthalmology. 2007;114:20–26.
   PubMed Web of Science ®Google Scholar
• Paranhos A, Jr., Paranhos FR, Prata JA, Jr., et al. Influence of keratometric readings on comparative intraocular pressure measurements with Goldmann, Tono-Pen, and noncontact tonometers. J Glaucoma. 2000;9:219–223.
   PubMed Web of Science ®Google Scholar
• Arcieri ES, Pierre Filho PT, Wakamatsu TH, et al. The effects of prostaglandin analogues on the blood aqueous barrier and corneal thickness of phakic patients with primary open-angle glaucoma and ocular hypertension. Eye (Lond). 2008;22:179–183.
   PubMed Web of Science ®Google Scholar
• Inoue K, Okugawa K, Oshika T, et al. Influence of dorzolamide on corneal endothelium. Jpn J Ophthalmol. 2003;47:129–133.
   PubMedGoogle Scholar
• Kaminski S, Hommer A, Koyuncu D, et al. Influence of dorzolamide on corneal thickness, endothelial cell count and corneal sensibility. Acta Ophthalmol Scand. 1998;76:78–79.
   PubMedGoogle Scholar
• Lass JH, Eriksson GL, Osterling L, et al. Comparison of the corneal effects of latanoprost, fixed combination latanoprost-timolol, and timolol: A double-masked, randomized, one-year study. Ophthalmology. 2001;108:264–271.
   PubMed Web of Science ®Google Scholar
• Goldmann H. Some basic problems in simple glaucoma. Am J Ophthalmol. 1959;48:213–220.
   PubMedGoogle Scholar
• Armaly MF, Rubin ML. Accommodation and applanation tonomery. Arch Ophthalmol. 1961;65:415–423.
   PubMedGoogle Scholar
• Wuensch KL. A posteriori power analysis. 2005 Available from http://core.ecu.edu/psyc/wuenschk/StatHelp/PowerAPosteriori.htm, accessed October 19, 2010.
   Google Scholar
• Knapp T. The overemphasis on power analysis. Nurs Res. 1996;45:379.
   PubMedGoogle Scholar
• Lenth RV. Some practical guidelines for effective sample size determination. Am Stat. 2001;55:187–193.
   Web of Science ®Google Scholar
• Hoenig JM, Heisey DM. The abuse of power: The pervasive fallacy of power calculations for data analysis. Am Stat. 2001;55:19–24.
   Web of Science ®Google Scholar