Top-grade quality View Tester;
Elegant design of butterfly-shape appearance;
High grade plated-film used in all optic lenses;
Two colors for option.
( when auxiliary lens is in use) 0 to-8.00D Rotary prism: (when+0.12D auxiliary lens or optional±0.12D lens is in use) 0 to 180°in 5°steps
Sphere powers range
Cylinder powers range Cross Cylinder: ( when-2.00D auxiliary lens is in use) 0 to20â–łD in 1â–łD steps
Astigmatic axis scale P.D. adjustment: reversal type (synchronized with astigmatic axis) ±0.25D,or±0.50D
48-80mm;Step:1mm 2mm forward and 5mm backward from standard plane;with scale: Convergence
Forehead reat adjustment: The optical axes og thelenses are aligned at a diatance of 400mm from the vertexes of the corneas (2mm each for right and left inward)Interpupillary distance enabling convergence=57mm to 80mm
16mm forward and backward
Corneal distance device
Effective field of view
19mm
