+16.75D to-19.00D, with minimum reading 0.25D or 0.12D
(When +0.12D auxiliary lens or optional+0.12D lens is in use)
Cylinder powers range:
0 to- 6.00D, with minimum reading 0.25D or 0.12D (when auxiliary lens is in use)
0 to-8.00D (when-2.00D auxiliary lens is in use)
Astigmatic axis scale: 0° to 180°, each step is 5°
Cross cylinder: +0.25D, reversal type (synchronized with astigmatic axis), also can select +0.50D
Rotary prism: 0 to 20D, each step is 1D
Interpupillary adjustment: 50mm to 80mm , each step is 1mm (right and left synchronized)
Forehead rest adjustment:16mm backward and forward
Convergence:
The optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the corneas (2mm each for right and left inward)
Interpupillary distance enabling convergence=57mm to 80mm
Corneal distance device: 2mm forward and 5mm backward from standard plane with scale
Effective visual range: 19mm
Description
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