At times, stepping onto ice is a risky proposition. Just knowing its thickness might not be enough, since underlying structural characteristics also determine its integrity. The same may be said of the Retinal Nerve Fiber Layer (RNFL). Its thickness is important, but it may not tell the whole story.
- GDx™, the world’s only Scanning Laser Polarimeter (SLP), uniquely characterizes RNFL Integrity (RNFL-I™), structural information that goes beyond thickness.
- Recent studies suggest that RNFL micro-structures undergo changes in orientation and density before RNFL anatomical thickness changes become apparent.1,2
- The SLP measurement in GDx, RNFL-I, depends on both RNFL thickness and the cumulative level of organization of its micro-structures.
- RNFL Integrity is a discrete assessment of RNFL health that today only GDx Scanning Laser Polarimetry can quantify.
- GDxPRO™ is the next evolution in GDx technology.
Look beyond thickness. Underlying structural organization is the key to RNFL Integrity.
1 Huang XR, and Knighton RW. Microtubules contribute to the birefringence of the retinal nerve fiber layer. Invest Ophthalmol Vis Sci. 2005; 46: 4588-4593.
2 Fortune B, Cull GA, and Burgoyne CF. Relative course of retinal nerve fiber layer (RNFL) birefringence, RNFL thickness and retinal function changes after optic nerve transaction. Invest Ophthalmol Vis Sci. 2008; 49: 4444–4452.