Related Experiment Video
Updated: Feb 13, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
Sensitivity and Specificity of Swedish Interactive Threshold Algorithm and Standard Full Threshold Perimetry in
Shahram Bamdad1, Vahid Beigi2, Mohammad Reza Sedaghat3
1Associate Professor, Department of Ophthalmology, Poostchi Ophthalmology Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
Swedish Interactive Threshold Algorithm (SITA) Fast offers comparable sensitivity to Standard Full Threshold (SFT) for glaucoma detection but with reduced specificity. Its significantly shorter test duration makes SITA Fast a more practical option for clinical use.
Area of Science:
- Ophthalmology
- Medical Diagnostics
- Visual Field Testing
Background:
- Perimetry is crucial for glaucoma diagnosis and management.
- Different perimetric strategies vary in accuracy for glaucoma assessment.
Purpose of the Study:
- To compare the diagnostic sensitivity and specificity of Swedish Interactive Threshold Algorithm (SITA) Fast and Standard Full Threshold (SFT) strategies.
- To evaluate the Humphrey Field Analyzer (HFA) strategies for identifying visual field defects in glaucoma patients.
Main Methods:
- Prospective observational case series involving 37 eyes of 20 glaucoma patients.
- Central 30-2 program used with both SITA Fast and SFT strategies, repeated over two weeks.
- Statistical analysis included Student's t-test, ANOVA, and chi-square test.
Main Results:
- SITA Fast and SFT demonstrated similar sensitivity (93.3%).
- SITA Fast specificity was 57.4%, while SFT specificity was 71.4%.
- SITA Fast test duration was significantly reduced by 62.5% (5.45 minutes vs. 14.6 minutes for SFT).
Conclusions:
- SITA Fast exhibits higher sensitivity for glaucoma detection than SFT, albeit with lower specificity.
- The substantially shorter testing time of SITA Fast enhances patient acceptability, particularly for vulnerable populations.
More Related Videos
08:52Psychophysical Tracking Method to Assess Taste Detection Thresholds in Children, Adolescents, and Adults: The Taste Detection Threshold TDT Test
Published on: April 21, 2021
10:28Open-Source Real-Time Closed-Loop Electrical Threshold Tracking for Translational Pain Research
Published on: April 21, 2023
Related Concept Videos
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Angle Closure Glaucoma: Treatment
Sensitivity, Specificity, and Predicted Value
Sensitivity is the...
Glaucoma: Overview
Contact Angle
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
Trial and Error and Algorithm