The Topcon KR-800S has received the highest ranking of any Autorefractor/Keratometer we’ve ever reviewed. It is without a doubt one of the best ARKs we’ve ever tested at our facility and thanks to its unique features should qualify as most than just an Autorefractor/Keratometer. The KR-800S is a device that is the result of actual healthcare innovation- not just a more compact, lighter, prettier unit than last year’s model; something that seems all too common among automated refraction devices. The ability to subjectively refract, and perform glare-testing/low-contrast testing all within the same instrument is a long overdue feat that we can applaud. Back in 1998 Zeiss Humphrey created the HARK 599 (a device we still sell and service today) which did in fact combine all of those features into an Autorefractor. Yet since then not a single company has produced an instrument with anywhere close to the capabilities the KR-800S has blessed us with; blasphemy. Thus, the KR-800S is far beyond the competition and has received our highest ever ranks of any Autorefractor to-date. It is worth noting that it’s not just the subjective testing we’re smitten about– the KR-800S is capable in every other category as well. We love the way it looks, we love its large LCD monitor and the way it works with the camera and user interface to refractive automatically and so effortlessly… we love how its genuinely lighter than most and motorized throughout. It just might be the last Autorefractor you’ll ever need to by, and without doubt it will be written into the history books as one of the best ever.
OUR TAKE: Its ability to combine objective and subjective refraction + glare/low-constrast testing makes it the best ever.
The KR-800S is unique because it features not only objective autorefraction and keratometry, but it also performs subjective far and near testing as well as 3 function tests. These 6 in 1 functions assure quick and accurate results and will enhance your test workflow.
All measured data can be observed from the wide 8.5 inch color touchscreen panel, allowing the user to quickly see each data point and explain the results to the patient. Moreover, Topcon’s ability to engineer a weight reduction of approximately 23%, as compared to older Topcon autorefractors, as well as the new Auto-Vertical mode have contributed to a smooth control of the unit during the measuring process. The KR-800S is more than a simple Auto Kerato- Refractometer, it will perfectly match your needs.
Both right and left eye information appear on a single 8.5 inch wide color touchscreen with all the obtained data together, which makes it extremely easy to compare: Objective (SCA), Subjective (SCA & ADD & VA), CL (SCA & ADD & VA), Glare/Grid/ Contrast VA. Utilizing this single display of all the data, the operator can easily understand the current refraction SCA of both eyes, whether the patient has presbyopia, as compared to the current SCA prescription. Moreover, the KR-800S can perform several function tests such as glare/grid/contrast without the need to prepare any other special devices.
The unique Rotary Prism Technology, exclusive to Topcon, allows for an unparalleled precision and reliability. Quick measurement becomes available by decentering and rotating the measurement ring projected on the retina rapidly. Moreover, it decreases the influence of an uneven reflection on the eye or a cataract eye.
The test results of all objective and subjective measurements can be shown on the monitor. Therefore, it is very easy to compare the VA difference between the objective and subjective tests. If a computerized lensmeter is connected, it can also test and show the patient’s VA result with their current eyeglasses. Since it is easy to compare VA with the patient’s current eyeglasses and the BCVA result, if necessary, new eyeglasses can be introduced.
The test is simple, standardized and provides a consistent and reliable way to evaluate vision changes in the presence of bright lights.
*The glare test can only be performed with the subjective far distance test.
The contrast test is an ideal test to check the patient’s quality of vision. The contrast of the chart can be changed across a range of percentages.
* The contrast test can only be performed with the subjective far distance test. * Only the contrast of the background changes.
The grid test can be performed for conditions affecting the macula. Patients with macular disease may see wavy or missing lines. The test can be helpful in detecting early signs of an abnormality in the eye. New grid test function shows the grid for no longer than 0.25 seconds to prevent the natural “completion phenomenon” filling in the grid.
*The grid test can only be performed with the subjective far distance test.
Compare Toric To Non-Toric Correction:
This software function allows the patient to between a spherical and a toric IOL. Simply push a single button to switch “Sphere, Cylinder, and Axis” to “Spherical Equivalent”. The patient may then view a comparison of their with and without cylinder correction. This feature is also useful for contact lens patients considering a toric lens versus a spherical equivalent to correct low astigmatism.
The Topcon KR-800S has multiple outputs (LAN, USB, RS-232C)- all organized neatly on the left side (base) of the operator position. The KR-800S will integrate directly with most major EHR programs.
The KR-800S will integrate with other similarly aged Topcon devices via LAN or RS-232C ports.
The Topcon KR-800 does not have 6-in-1 capabilities and does not feature subjective testing, nor glare/low-contrast/grid testing. Only the KR-800S employ these features.