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1. OUTLINE
1-1 Features of Product
This instrument is a refractor and the lenses having a variety of power are built in it to measure the refraction
of eyes. This instrument is used to measure the correction quantity of refraction and to perform the
binocular function test according to the answers of the patient. The lenses built in this instrument are
changed by the accessory controller or the commercial personal computer to which the special software is
installed.
1-2 Operation Principle
On a disk built in the instrument, the lenses with a variety of power are arranged. By turning the disk, the
lenses are changed to each other. There are two or more disks in the instrument. So, measurement of
different types can be carried out by combining the disks.
1-3 Specifications of Product
1-3-1 Specifications by items
• Spherical power:
Measuring range +27.00 ~ -27.00D
Measuring step 0.25D/3.00D
• Astigmatic power:
Measuring range +8.00 ~ -8.00D
Measuring step 0.25D/1.00D
• Cylinder axis:
Measuring range 0 ~ 180°
Measuring step 1°/5°/15°
• Prism power:
Measuring range 0 ~ 20∆ (all directions)
Measuring step 0.1∆/0.5∆/1.0∆
• Pupillary distance:
Setting range 48 ~ 80mm
Setting step 0.5mm/1mm
• Cross cylinder:
Jackson Cross ±0.25D/±0.50D
Auto Cross ±0.25D
• Test lens (Auxiliary lens):
Red-Green filter
Polarized filter (45°/135°)
Prism (6∆/10∆)
Red Maddox (horizontal/vertical)
Lens for retinoscopy (+1.5D/+2.0D)
Cross cylinder for measuring presbyopia (±0.5D)
Occluding plate
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