advertisement
Abstract #24483 Published in IGR 11-3
Intraocular pressure profile during the modified diurnal tension curve using Goldman applanation tonometry and dynamic contour tonometry
Vasconcelos De Moraes CG; Castro Reis AS; Sano ME; Barreira AK; Vessani RM; Jr Susanna RJournal of Ocular Biology, Diseases, and Informatics 2009; 2: 29-32
The aim of this study was to compare the intraocular pressure (IOP) profile during the modified diurnal tension curve (mDTC) using Goldman applanation tonometry (GAT) and dynamic contour tonometry (DCT) in treated glaucomatous eyes. Eligible subjects were submitted to the mDTC using GAT and DCT in this sequence. IOP measurements were performed at 8 a.m., 10 a.m., 2 p.m., and 4 p.m.. Central corneal thickness was measured using ultrasound pachymetry in the morning. Statistical analysis was performed using paired Student's t test and Bland-Altman plot. The mean difference between DCT and GAT measurements was 0.9 mmHg. The mean(element of) ±(element of)SD IOP measurements during the mDTC were 19.68(element of)(plus or minus)(element of)4.68, 17.63(element of) ±(element of)4.44, 17.25(element of) ±(element of)5.41, and 17.32(element of) ±(element of)4.25 mmHg using GAT and 19.97(element of) ±(element of)4.75, 18.79(element of)(plus or minus)(element of)4.61, 19.53(element of) ±(element of)5.30, and 19.43(element of) ±(element of)5.45 mmHg using DCT. IOP measurements were higher in the morning (8 a.m.) and decreased throughout the day using both tonometers. The difference between IOP measurements using GAT and DCT was smaller in the morning and increased throughout the day. The IOP variability using GAT was higher than using DCT. Corneal biomechanical properties might help explain our findings.
Dr. C.G. Vasconcelos De Moraes, 321 e 13th Street, New York, NY 10003, USA. gustavonyee@gmail.com
Classification:
6.1.1 Devices, techniques (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)
6.1.2 Fluctuation, circadian rhythms (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)
