•Unique design butterfly-shape appearance.
•Capable of checking up all-sided visual functions, accurate and comfortable in measurement.
•Exquisite manufacturing technique, with comfortable feel.
•All the lens are anti-reflection coated.
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) Cylinder power range...........................................0 to -6.00D, with minimum reading 0.25D or 0.12D (when auxiliary lens is in use)0 t o -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 20ΔD in 1ΔD step Interpupillary adjustment.....................................................48mm to 80mm in 1mm step (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 field of view...............................................................................................................19mm Weight...........................................................................................................................5kgs Size................................................................................................................323×315×85mm
