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Canon, the market leader in
ophthalmic and optometric technology, is the first company to develop a
fully automatic ref-keratometer and refractor. The new equipment will
greatly increase the easy and accuracy of eye measurement.
The
Canon
RK-F1
ref-keratometer
is truly automatic. All steps -
from automatic alignment to measurement and printout - are initiated
simply by pressing the Start button. No further manual adjustments are
needed. This unique automated process will speed up eye examinations.
Equally importantly, as measuring accuracy has been greatly enhanced, it
will also increase reliability. |
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Refraction and
Keratometry
In terms of reliability and
precision, the RK-F1's performance is second to none. For refraction, its dioptric measurement range of -30D to +22D is among the widest available, which
allows you to better examine strong myopia and other conditions. And for
keratometry, the radius of curvature extends from 5.5mm to 10.0mm. As refraction
and keratometry are measured in the same sequence, the final printout includes
all the results together: SPH, CYL, AX, central radius of the cornea, residual
astigmatism, and pupil distance. To further ensure the reliability of your data,
the RK-F1 also features a small minimum pupil size requirement and an automatic
fogging system with colour picture target. |
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Retroillumination
Through
retroillumination, the RK-F1 brings you an extremely detailed view of the
eyes that's particularly useful for identifying cataracts, vitreous
opacity, scars, and other serious eye problems. Dust or scratches on the
examinee's contact lens are also clearly visible in this mode. The RK-F1
stores up to two images, which can be selected and displayed on the
monitor at a magnified size for observation.
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Corneal Periphery
Measurement
The peripheral keratometry mode provides
accurate measurements for examining oblique astigmatism as well as for
determining the best fit for a contact lens. The RK-F1 can be used to make a
series of measurements at a 30fangle from the eye's center, along the attentive
meridians. Full auto-alignment technology streamlines this procedure, as all the
operator needs to do is press the Start button to confirm that the eye is
properly fixated on each measurement point. Reading for the corneal astigmatism
axis and corneal eccentricity (E) are automatically included on the
printout.
Diameter Measurement
Diameter measurement of the cornea or pupil, or
of a contact lens being worn during the eye exam, are easy to acquire with the
RK-F1. To ensure the accuracy of measurements, the unit first deploys its
intelligent auto-alignment feature to capture an optimum still image of the eye.
Next, it derives its data from captured image. This process overcomes the
obstacles posed to obtaining precise measurements by eye movement.
Ergonomic Controls
and More
 The operation
panel of the RK-F1 offers an unmatched level of operator comfort at every stage
of the process. First of all, manual alignment can be done using your fingertips
alone, thanks to the unique trackball and roller configuration - a major
improvement over conventional joystick operation. Also, the easy-to-press
control keys are grouped together to simplify access to the unit's various
functions, which include vertex distance switching, measurement mode switching,
and display of data stored in memory. The layout of the operation panel allows
comfortable use from either a seated or standing position. In addition, the
unit's body design gives you unrestricted access to the eye - an important
feature when long eyelashes obstruct measurement or in other situations where
the examinee's eyelid needs to be lifted.
A Great Fit In Any
Exam Area
  The RK-F1 features a stylish, original body
design that does more than just change the notion of what optometric equipment
can look like. Because its measurement bead is the only part that moves,
examinees are free to place their hands, eyeglasses, or belonglings next to the
unit while their eyes are checked if exam space is limited. Furthermore, the
power cord connects to the bottom of the unit, which contributes to tidy
installation.
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Motorized Chin
Rest
A motorized chin rest makes it easy
to adjust the RK-F1 when beginning the eye exam. The chin rest can be moved up
and down to match the examinee's height using a pair of keys located on the
unit's operation panel. |
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Full Auto Ref-Keratometer RK-F1 Specifications
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REFRACTOMETRY
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Sphere (SPH) |
-30 to +22 D when VD=12mm (Increments:
0.12D and 0.25D) |
Retroillumination |
Available; 2 images can be stored in
memory |
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Cylinder (CYL) |
0 to
±10
D (Increments: 0.12D and 0.25D) |
Memory |
10 measurements for each eye |
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Axis (AX) |
1° to 180° (Increments: 1°) |
Built-in printer |
Thermal line printer |
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Pupil distance (PD) |
0 to 85 mm (Increments: 1mm) |
Power-saving system |
Available |
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Vertex distance (VD) |
0/12/13.5 mm |
Power supply |
100 – 240V, 50/60Hz, 0.8 – 0.4A |
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Cylinder form |
–, +, +/– |
Dimensions (W x L x H) |
Approx. 280 x 520 x 470 mm |
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Minimum pupil size |
ø 2.5mm |
Weight |
Approx. 21kg |
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Radius of curvature |
5.5 to 10 mm (Increments: 0.01mm)
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Corneal power |
33.75 to 61.25 D when cornea equivalent
refractive index is 1.3375 (Increments:
0.05D, 0.12D, 0.25D) |
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Power supply cable |
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Keratometry model eye (with
contact lens holder) |
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Axis |
1° to 180° (Increments: 1°) |
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Corneal periphery |
Measurement area: 30° when radius of
curvature is 8mm |
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Chin rest paper |
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Blower brush |
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Dust cover |
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CORNEAL DIAMETER MEASUREMENT |
Optional accessories |
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Corneal diameter |
2.0 to 16.0 mm (Increments: 0.1mm) |
Printing paper, chin rest paper,
motorized table, printer cable |
• Specifications are subject to
change without notice.
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