Healthy retinal nerve fiber layer
Moderate retinal nerve fiber loss
Severe retinal nerve fiber loss | | Catch glaucoma early with precise Retinal Nerve Fiber (RNFL) analysis.
The GDx provides highly reproducible, objective measurements of the RNFL, to detect structural changes early. It then compares these measurements to an age-stratified, multi-ethnic normative database, providing you with a unique visual representation. It also uses neural network techniques to calculate a unique Nerve Fiber Index (NFI) to determine the likelihood of glaucoma. A recent study found that the NFI can differentiate between normal eyes and glaucomatous eyes before visual field loss with sensitivity and specificity of 83% and 82%, respectively1.
Primer Excerpts – Clinical guidance for using the GDx
 Principles of Scanning Laser Polarimetry (651 kB)
The Normative Database (295 kB)
Clinical Interpretation of the Printout (3.1 MB)
Case Studies (1.9 MB)
Difficult Interpretations (1.3 MB)
References (33 kB)
Training Slides
Technology Description (2.5 MB)
Case Studies (3.2 MB)
AAO 2005 Videos
 "Detecting Early Glaucoma and Tracking Change: GDx Case Studies", Neil T. Choplin, MD, Eye Care of San Diego
"Nerve Fiber Evaluation for Glaucoma Detection and Management", Robert D. Fechtner, MD, Director of Glaucoma Division, University of Medicine and Dentistry of New Jersey
Key Research Papers
 Read abstracts of studies demonstrating the GDx's clinical value. | | Highlights
Clinical Interpretation
GDx Review with GPA
Key Research Papers
Practice Management
Patient Education
AAO 2005 Videos
AAO 2006 Videos
Brochure
Articles
GDx™ Scanning Laser Polarimeter
(VISIONS Magazine)
Quantifying Glaucoma Progression
(Ophthalmology Management Supplement) |