ISSN 1301 - 0883 / E-ISSN 1309 - 3886
 
 








  The Effects of Corneal Edema on the Intraocular Pressure Measurements [Eastern J Med]
Eastern J Med. 2020; 25(2): 285-292 | DOI: 10.5505/ejm.2020.16023  

The Effects of Corneal Edema on the Intraocular Pressure Measurements

Erbil Seven1, Serek Tekin1, Muhammed Batur1, Beyza Yavuzer1, Tekin Yaşar2
1Department Of Ophthalmology, Van Yüzüncü Yıl University, Van, Turkey
2Health Sciences University, Beyoglu Eye Training and Research Hospital, İstanbul, Turkey

INTRODUCTION: To evaluate the possible effects of corneal edema on intraocular pressure (IOP) measurements obtained with three different tonometers on the first day after cataract surgery.
METHODS: Sixty-four eyes of the 64 patients underwent phacoemulsification and IOP measurements using Goldmann applanation tonometer (GAT), Tono-Pen applanation tonometer (TAT), and Pascal digital contour tonometer (DCT) the first day after surgery. Central corneal thickness (CCT) measurements were used to quantify the postoperative corneal edema. Intraclass correlation coefficient and Bland-Altman plot were used to assess the compatibility of IOP measurements among three method pairs.
RESULTS: TAT and DCT IOP measurements were found to be compatible with each other (p=0.141) in the corneal edema group. The GAT and TAT IOP measurements in the eyes with corneal edema were inversely proportional to the CCT values (p=0.011 and p=0.033, respectively), but the DCT relationship was not statistically significant (p=0.44).
DISCUSSION AND CONCLUSION: The lack of a significant relationship between DCT and CCT in edematous corneas may suggest that DCT, as in normal corneas, can perform CCT-independent measurements. However, there is still no gold standard method for IOP measurement in edematous corneas.

Keywords: corneal edema, digital contour tonometer, Goldmann applanation tonometer, intraocular pressure, Tono-Pen


Erbil Seven, Serek Tekin, Muhammed Batur, Beyza Yavuzer, Tekin Yaşar. The Effects of Corneal Edema on the Intraocular Pressure Measurements. Eastern J Med. 2020; 25(2): 285-292

Corresponding Author: Erbil Seven, Türkiye


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