PRK-5000 Operation Manual
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(2) Ready for Observation
Ask the examinee to look at the red roof of the eye fixation target.
See procedure (3) of the Continuous Keratometry and Refractometry (K/R Mode).
(3) Observation
z Adjust the amount of light of each light source so the image can be seen clearly.
Press SIZE button and select the light source. The selected light source will be
displayed in reverse image. (RED:Light source for retroillumination, ILM:Light
source for illumination eye front, TAG:Light source for illuminating internal eye
fixation target, Variable range:0-100 / If it is Set to 0, the light turns off)
z Position the light for retroillumination reflected from cornea to a part that is not
opaque by using the operation lever. If the light is directed from the edge of the pupil,
it will be easier to observe the image. Focus on the image.
z After confirming that the image is focused, press measurement button. The image
will freeze.
[Freeze Mode Display]
[Frz/Ref Mode Display]
z Maximum of two images can be stored for each eye. Each image will have a sub
number(01 or 02).
Sub Number
Serial Number
Result of refractometry
Pupil
Press measuremen
button to store the
image into memory.
Press other switch to
unfreeze the image.