Zeiss VISUREF 150, Руководство пользователя

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Performance specifications
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Performance specifications
Functional description
ZEISS VISUREF 150 is an autorefractor/keratometer. It allows the
measurement of objective refraction including sphere, cylinder, axis. The
VISUREF 150 covers the refractive measurement range from -25 D to +22 D
so that even patients with severe refractive errors can be measured.
Furthermore, the device determines the central keratometry values of the
eye, consisting of corneal radii and the axis. Data on pupil distance and pupil
diameter is also recorded. In contact lens mode, the device can measure the
base curve of contact lenses.
The user can take up to seven measurements per eye, either manually or
automatically. The device calculates the average value from these
measurements. Results of intermediate measurements can also be retrieved.
Various illumination parameters can be adapted for the purpose of
enhancing the visual inspection of the measured object and optimizing the
measurement. These include the intensity of the ambient light on the
measured object, reference illumination and illumination of the optical
fixation target. Special illumination parameters in IOL mode can be
preselected when measuring patients with implanted intraocular lenses (IOL).
By adapting the illumination parameters, it is also possible to measures eyes
with a slight cataract.
The device can capture, save and output images of the eye to be measured.
Space is provided for up to two images per eye. Abnormalities or
pathological details of the eye can be enlarged using the zoom function.
Furthermore, the device can be used to manually measure any distance in
these captured images, e.g. corneal or pupil diameters.
The device has a motorized chin rest for comfortable positioning of the
patient's eye at the level of the Canthus mark. The device is operated via an
adjustable touchscreen display with an intuitive user interface, control
buttons for the chin rest and a joystick for alignment of the measuring head.