Acıbadem Üniversitesi Sağlık Bilimleri Dergisi Online Early
Intraocular Pressure Measurements With Pneumotonometer and Tono-Pen In Patients Using Topical Antiglaucomatous Medication Due To Primary Open-Angle Glaucoma (Poag)
Kemal Özülken1,Çağrı İlhan2
1TOBB ETÜ Tıp Fakültesi Göz Hastalıkları Anabilim Dalı, Ankara, Türkiye
2Hatay Devlet Hastanesi, Göz Hastalıkları, Hatay, Türkiye
Aim: To compare intraocular pressure (IOP) measurements obtained with Goldmann applanation tonometer (GAT), pneumotonometer, and Tono-pen in patients using topical antiglaucomatous medication due to primary open-angle glaucoma (POAG).

Materials and Methods: The medical documents of patients using topical antiglaucomatous medication due to primary openangle glaucoma were retrospectively investigated in this non-randomized case-control study. Only the 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 Tono-Pen (8 ? 44 mmHg). The mean IOP values obtained with both pneumotonometer and Tono- Pen 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 Tono-Pen (r = 0.83 and p <0.001) were significantly correlated with IOP measurements obtained with GAT.

Conclusion: IOP measurements obtained with pneumotonometer and Tono-Pen in patients using topical antiglaucomatous medication due to primary open-angle glaucoma is lower and correlated with the measurements obtained with GAT. Keywords : Glaucoma, primary open-angle glaucoma, Goldmann applanation tonometer, pneumotonometer, Tono-Pen