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CE Certificated, FDA registered
Description The ASIN on Amazon is B01M3P0FXR
·Top-grade quality made with all metal machanism and gears for best smoothy turning.
·Elegant design of butterfly-shape appearance
·Capable of checking up all-sided visual functions, precise and comfortable in measurement
·Exquisite manufacturing technique, with comfortable feel
·High grade plated-film used in all optic lenses
·Two colors choice, grey or black. And available with Plus Cylinder type.
Specification
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Sphere powers range: |
+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)
+26.75D to－29.00D (When optional ±10.00D lens is in use) |
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Cylinder power range: |
0 to－6.00D, with minimum reading 0.25D or 0.12D (whenauxiliary lens is in use)
0 to－8.00D (when－2.00D auxiliary lens is in use) |
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Astigmatic axis scale: |
0 to 180° in 5° steps |
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Cross cylinder: |
±0.25D, reversal type (synchronized with astigmatic axis) |
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Rotary prism: |
0 to 20?D in 1?D step |
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Interpupillary adjustment: |
48mm to 80mm in 1mm step (right and left synchronized) |
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Forehead rest adjustment: |
16mm backward and forward |
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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) |
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Interpupillary distance |
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enabling convergence： |
57mm to 80mm |
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Corneal distance device: |
2mm forward and 5mm backward from standard plane; with scale |
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Effective field of view: |
19mm |
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Weight: |
5kgs |
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Size: |
291—323×315×85 |
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