Phoropter Optical View Tester Vision Tester

Top-grade quality made with all metal machanism and gears for best smoothy turning. Elegant design of butterfly-shape appearance --1.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) --2.extending sphere range:+26.75D to－29.00D (When optional ±10.00D lens is in use) --3.Cylinder power range: 0 to－6.00D, with minimum reading 0.25D or 0.12D (whenauxiliary lens is in use) --4.extending cylinder range:0 to－8.00D (when－2.00D auxiliary lens is in use) --5.Astigmatic axis scale: 0 to 180° in 15° steps --6.Cross cylinder: ±0.25D, reversal type (synchronized with astigmatic axis) --7.Rotary prism: 0 to 20?D in 1?D step --8.Interpupillary adjustment: 48mm to 80mm in 1mm step (right and left synchronized) --9.Forehead rest adjustment: 16mm backward and forward --10.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) --11.Interpupillary distance enabling convergence： 57mm to 80mm --12.Corneal distance device: 2mm forward and 5mm backward from standard plane; with scale --13.Effective field of view: 19mm --14.Weight: 5kgs --15.Size: 291—323×315×85

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