Comparison of Humphrey 24-2 SITA Standard, SITA Fast, and SITA Faster Test Strategies in Patients with Glaucoma

To compare 24-2 Swedish Interactive Thresholding Algorithm (SITA) Standard (SS), SITA Fast (SF), and SITA Faster (SFR) tests performed with Humphrey Field Analyzer (HFA3 Model 840, Zeiss) in patients with glaucomatous visual field (VF) defect.

Total of 72 eyes of 72 patients with glaucomatous VF defects were included in the study. Test duration, mean deviation (MD), pattern standard deviation (PSD), visual field index (VFI), and the width and depth of glaucomatous VF defect were compared among the three tests.

The most common diagnoses were primary open-angle glaucoma in 45 eyes (62.5%) and pseudoexfoliation glaucoma in 10 eyes (13.9%). Mean test durations for the SS, SF, and SFR tests were 420.38±53.87 s, 275.94±45.52 s, and 191.89±35.48 s, respectively. Test durations were found to be statistically significantly different in all three tests (p<0.001). There was no statistically significant difference between the three tests in terms of MD, width, or depth of glaucomatous VF defect (p=0.211, p=0.762, and p=0.701, respectively). There was a statistically significant difference among the three tests in terms of VFI and PSD values (p=0.008 and p<0.001, respectively).

Test duration was found to be shorter in the SFR test when compared to SS and SF tests. However, all three tests were similar in terms of the width and depth of the glaucomatous VF defect.