Research Article

Intraocular Pressure Measurements with Pneumotonometer and Tono-Pen in Patients Using Topical Antiglaucomatous Medication Due to Primary Open Angle Glaucoma

Volume: 12 Number: 1 December 16, 2020
  • Kemal Özülken *
  • Çağrı İlhan
EN TR

Intraocular Pressure Measurements with Pneumotonometer and Tono-Pen in Patients Using Topical Antiglaucomatous Medication Due to Primary Open Angle Glaucoma

Abstract

Purpose:To compare intraocular pressure (IOP) measurements obtained with Goldmann applanation tonometer (GAT), pneumotonometer, and Tono-pen in patients using topical antiglaucomatous medication due to primer open angle glaucoma. Patients and Methods:The medical documents of patients using topical antiglaucomatous medication due to primary open angle glaucoma were retrospectively investigated in this non-randomized case-control study. Only right eyes of 113 patients were included. The IOP measurements obtained with pneumotonometer and Tono-Pen were statistically compared with the IOP measurements obtained with GAT, and the correlations between series were investigated. Results:The mean age was 57.41  11.02 years (41 – 82 years) in 113 patients, 52 males and 61 females (p = 0.638). The mean IOP was 21.04  5.40 mmHg (12 – 46 mmHg) with GAT, 20.19  5.61 mmHg (12 – 48 mmHg) with pneumotonometer and 17.37  4.99 mmHg with tonopen (8 – 44 mmHg). The mean IOP values obtained with both pneumotonometer and tonopen were significantly lower than the mean IOP obtained with GAT (p <0.001 for both). IOP measurements obtained with both pneumotonometer (r = 0.96 and p <0.001) and tonopen (r = 0.83 and p <0.001) were significantly correlated with IOP measurements obtained with GAT. Conclusion:IOP measurements obtained with pneumotonometer and tonopen in patients using topical antiglaucomatous medication due to primer open angle glaucoma is lower and correlated with the measurements obtained with GAT.

Keywords

References

  1. 1. Quigley HA. Number of people with glaucoma worldwide. Br J Ophthalmol 1996; 80: 389–393.
  2. 2. Chang TC, Congdon NG, Wojciechowski R, Munoz B, Gilbert D, Chen P et al. Determinants and heritability of intraocular pressure and cup-to-disc ratio in a defined older population. Ophthalmology 2005; 112: 1186–1191.
  3. 3. Elmallah MK, Asrani SG. New ways to measure intraocular pressure. Curr Opin Ophthalmol 2008; 19: 122–126.
  4. 4. Kwon TH, Ghaboussi J, Pecknold DA, Hashash YM. Effect of cornea material stiffness on measured intraocular pressure. J Biomech. 2008;4:1707–1713.
  5. 5. Hamilton KE, Pye DC. Young’s modulus in normal corneas and the effect on applanation tonometry. Optom Vis Sci. 2008;8:445–450.
  6. 6. Chihara E. Assessment of true intraocular pressure: the gap between theory and practical data. Surv Ophthalmol 2008;53(3):203-18.
  7. 7. Rosentreter A, Jablonski KS, Mellein AC, Gaki S, Hueber A, Dietlein TS. A new rebound tonometer for home monitoring of intraocular pressure. Graefes Arch Clin Exp Ophthalmol 2011;249(11):1713-9.
  8. 8. Brencher HL, Kohl P, Reinke AR, Yolton RL. Clinical comparison of air-puff and Goldmann tonometers. J Am Optom Assoc. 1991;62:395–402.

Details

Primary Language

English

Subjects

Clinical Sciences

Journal Section

Research Article

Authors

Kemal Özülken *
Türkiye

Çağrı İlhan
Türkiye

Publication Date

December 16, 2020

Submission Date

June 2, 2019

Acceptance Date

October 29, 2019

Published in Issue

Year 1970 Volume: 12 Number: 1

EndNote
Özülken K, İlhan Ç (December 1, 2020) Intraocular Pressure Measurements with Pneumotonometer and Tono-Pen in Patients Using Topical Antiglaucomatous Medication Due to Primary Open Angle Glaucoma. Acıbadem Üniversitesi Sağlık Bilimleri Dergisi 12 1 59–62.