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HRT VS. GDx ...(Brief Article)
HRT: Monitoring change is the key.
No matter how much clinical information we gather, glaucoma is difficult to diagnose in some patients. Frankly, this will always be the case, despite new technology. But, managing glaucoma is even more complex. This is when we need the most accurate tools we can get our hands on. The HRT is an important tool for those of us who are serious about managing glaucoma on a long-term basis.
what It Does
The HRT--it stands for Heidelberg Retina Tomograph, a confocal scanning microscope made by Heidelberg Engineering Inc. of Carlsbad, Calif.--helps you manage glaucoma by measuring cup shape, height variation contours, mean retinal nerve fiber layer thickness and rim volume.
It gives you a three-dimensional analysis of retinal images, and allows for a quantitative assessment of the optic nerve and the retinal topography. Importantly, you can quantify topographic changes over time, which is critical when you're managing glaucoma.
The HRT is easy to use. You can perform testing on dilated or undilated eyes. It also has high patient acceptance. You can acquire an image in two seconds. The user defines a contour line that identifies the margin of the optic nerve. The computer software analyzes the data and provides the measurements.
The instrument obtains 64 individual scans, starting anterior to the optic nerve and continuing up to and beyond the base of the cup. The instrument then stacks the images to form a topographic image of the optic nerve, and then rapidly analyzes the data.
- Inside the Heidelberg Retina Tomograph II: Find out how the HRT II's 3-D...
- Magazine article from: Review of Optometry November 15, 2001 700+ words
...who have used the HRT II find it has allowed...structural measure of optic nerve changes inspires...when it comes to optic nerve imaging. In the...trained observer, the HRT II can upgrade your...technology behind the HRT II is the same as...of a patient's optic ...
- The correlation between optic nerve head topographic measurements,...
- Magazine article from: British Journal of Ophthalmology Lan, Y-W Henson, DB Kwartz, AJ September 1, 2003 700+ words
...dimensional analysis of the optic nerve head and RNFL. The HRT is a laser scanning...the topography of the optic nerve head and peripapillary...topographical image, HRT software generates...parameters describing the optic nerve head and peripapillary...
- 3 The integration of new technologies: new instrumentation improves...
- Magazine article from: Review of Optometry Flanagan, John G. October 15, 2006 700+ words
...assessment of the optic nerve/RNFL. Scanning...retina and/or the optic nerve head. The Heidelberg...generation model, the HRT III, was introduced...shape of both the optic nerve head and the parapapillary...Figure 2). The HRT remains the only...
- Variability across the optic nerve head in scanning laser tomography....
- Magazine article from: British Journal of Ophthalmology Tan, J.C.H. Garway-Heath, D.F. Hitchings, R.A. May 1, 2003 700+ words
...laser tomography of the optic nerve head. Methods: 21 normal...laser tomography of the optic nerve head (ONH) is reproducible...Heidelberg retina tomograph (HRT) image analysis may be...Imaging Test-retest HRT imaging (software v2...
- The optic nerve in glaucoma.
- Magazine article from: Review of Optometry Mann, Daryl November 15, 2003 700+ words
...even without evidence of optic nerve damage. Pachymetry helps...field loss is measured. Optic nerve imaging instruments such as Heidelberg's HRT, GDx, OCT and RTA are...photographs. Glaucoma and the Optic Nerve Ophthalmoscopy allows...
- Reconciling structure and function: after developing a map that successfully...
- Magazine article from: Review of Optometry Gardiner, Stuart K. March 15, 2006 700+ words
...measures the structure of the optic nerve head. Unfortunately...demonstrates how sectors of the optic nerve head (ONH) are related...Retinal Tomograph, or HRT) and standard automated...technology (FDT) perimetry and HRT. The same 24-2 pattern...
- Objective monitoring of the optic nerve head.(Features)
- Magazine article from: Optician October 17, 2008 700+ words
...practice, Niall O'Kane describes how the HRT II helped in the case of suspect glaucoma...confirmed no abnormalities. A baseline with the HRT-II was captured and Goldmann applanation...fundus photography. Interestingly, the HRT-II examination identified no changes to...
- The Heidelberg HRT II in the diagnosis and management of glaucoma.
- Magazine article from: Review of Optometry Wooldridge, Robert P. November 15, 2003 700+ words
...radial line across the optic nerve to provide a contour...cross-section the optic nerve in six different...Retina Tomograph (HRT) The HRT develops...of section, the HRT analyzes the data...dimensional image of the optic nerve. A contour line...
- HRT II: Sizzle or substance? Here's what your colleagues really think about the...
- Magazine article from: Review of Optometry Black, Amy February 15, 2002 700+ words
...Heidelberg Engineering says the HRT II is a smaller, more user...and less costly version of the HRT. It's a confocal scanning...that requires no dilation. The HRT II scans up to 64 images of the optic nerve head in two seconds. Then...
- Practice Management Benefits of the HRT II: Find out what a difference the HRT...
- Magazine article from: Review of Optometry November 15, 2001 700+ words
...clinical utility, the HRT II's $32,990 price...imaging and analysis of the optic nerve head with the CPT code...before obtaining the HRT II last year. He discovered...fields test along with optic nerve imaging. RELATED ARTICLE...Field Testing and the HRT II MURRAY FINGERET A...