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Manual phoropter Minus vision Tester
Color: White
Specifications:
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)
Cylinder power 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° in 5° steps
Cross cylinder: ±0.25D, reversal type (synchronized with astigmatic axis)
Rotary prism: 0 to 20∆D in 1∆D step
Interpupillary adjustment: 50mm to 80mm in 1mm step (right and left synchronized)
Forehead rest adjustment: 13mm 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
Effective field of view: 18.5mm
Weight: 5kgs
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United States
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