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right lens is measured.
4) Left lens measurement
Move the left lens. When the alighment and the measurement data is finished, the PD/PH of the
right lens is measured.
Or you can go from left to right lens as your needs.
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To make the measurement more accurate, move the left and right lens towards the same
direction when proceed the alighment.
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Make sure the nose pad slider is fixed when measuring the lens.
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To make accurate measurement of the low astigmatism lens, use “manual reading”. Make the
Prism power IO,UD as small as possible.
c. Measurement result display
After PD and PH of both lenses are confirmed, the result is get and displayed.
d. Print out measured result.
6.8 Measuring UV Transmittance
In Normal Measurement Mode, detailed steps of UV transmittance measurement are shown as
below:
a. Press Measurement function switch shortcut tab to choose UV transmittance measurement
function.
b. Set the lens onto Lens support
c. Alignment
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When measuring UV transmittance, the result may be not accurate if alignment is not done
well.
d. UV Transmittance measurement
After alignment, press Read key to finish measurement once, and you get measured result, the
UV Transmittance, in the form of percentage.
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Harmful effects of UV (ultraviolet rays) on the eyes.
The UV contained in sunlight is roughly classified into three types.
UV-C 280nm or less
It will not reach the earth's surface.
UV-B 280 nm to 320nm
It Was absorbed by the cornea. Causing corneal loss, such as inflammation.
Cause sunburn. The skin turns red.
Causes skin irritation and skin damage, such as: blemishes, freckles and