If you put someone in a room and asked them to distinguish between the HFA-II-i-series and the original HFA-II, they might have some trouble due to the fact they’re basically identical- or at least in appearance. Typically, when technology evolves, so does the design herein but then again we are talking about Carl Zeiss Ophthalmic after all. Fortunately, the newer i-series line-up offers some new exciting features, as well as modern data export solutions for EHR integration. The first thing you’ll notice is the substitution of a floppy drive for USB ports; no more backing up patient data on 1997 floppy disks. The second thing you’ll notice, is the HFA-II-i operates in almost exactly the same way– everything is familiar and how you would expect it coming off the prior HFA-II. We do see some legitimate contrasts in the upper-model i-series units (740i and up), including Guidance Progression Analysis (GPA), and STATPAC2 perimetry tech. Unlike the 740i (and lower), the 745i introduces blue-yellow perimetry stimulus’. Blue-on-Yellow Perimetry (B-Y), also known as Short Wavelength Automated Perimetry (SWAP), can detect early visual field loss before a reduction in differential light sensitivity is seen with standard white-on-white (W-W) perimetry. The 745i also carries forward pupil-gaze tracking capabilities from the 740i.
OUR TAKE: The 745i offers blue-on-yellow perimetry, but if that’s not needed, the 740i will do just fine.
HFA Guided Progression Analysis (GPA) software accurately differentiates statistically significant progression of visual field loss from random variability, providing an advanced, proven method to enhance the management of glaucoma. The analysis is based upon detailed empirical knowledge of the variability found at various stages of glaucomatous visual field loss through information acquired in extensive multi-center clinical trials worldwide.
The HFA is the only perimeter with progression analysis validated in the Early Manifest Glaucoma Trial.
- Enhanced Guided Progression Analysis (GPA) software identifies statistically significant progression automatically, and presents
“at a glance” visual field progression analysis on a single page report.
- Visual Field Index (VFITM) is a simple and intuitive global index to determine percentage of field loss on every visual field.
- Pattern Deviation Plots identify localized fieldloss, minimizing ocular media effects such
- STATPAC, the language of perimetry, comparesresults to proprietary age-normative and glaucoma databases.
SITA-SWAP software reduces blue-yellow threshold test time to just 4–6 minutes, providing a clinically practical tool for early detection of glaucoma.
- Patented system automatically tracks and alignshead and eye position.
- Kinetic, Custom and Social Security Disability testing provide a wide range of special purpose testing protocols.
- DICOM Gateway option supports connectivityin DICOM environments such as FORUM or the U.S. Veterans Administration Hospitals.
- HFA-NET Pro with EasyConnectTM RCT provides plug-n-play connectivity solutions to connect to an office network.
- Touch-screen and menu-driven interfacesimplifies operation.
- Ergonomic design promotes maximum comfort,access and versatility.
HFA connectivity with FORUM delivers centralized data storage, management and retrieval to make your glaucoma patient data instantly available – right at your fingertips.
- View the simultaneous display of reports from multiple instruments such as HFA, Cirrus HD-OCT, GDx and fundus cameras.
- Share raw data between HFAs through FORUM.
- Correlate structure and function at a glance with the HFA-Cirrus Combined Report.
- Have a truly seamless workflow by connecting FORUM to an EHR.
We include a HP Laserjet 6C Printer with the purchase of the HFA unit. You can add a double top table to your purchase using the variations options prior to checking out.
It depends on the test, however most full threshold tests on HFA units take anywhere from 3-6 minutes per eye.
In general, the HFA units are relatively patient friendly however most do not dream of visual field testing. Elderly patients may find it difficult to maintain gaze, however the machine reads and understands this through false-negatives.