view tester/vision tester/phoropter

Descripción del producto

Features CE Certificate •Top-grade quality View Tester in Far East •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 •This device is applicable to ophthalmology department of hospitals and spectacle stores for precision measurement of visual functions such as myopia, hyperopia, astigmatism, eyesight balance, heterophoria, stereoscopic vision and eyesight amalgamation •Two colors choice Specification Sphere powers range: **6.*5D to－*9.*0D, with minimum reading 0.*5D or 0.*2D (When *0.*2D auxiliary lens or optional±0.*2D lens is in use) **6.*5D to－*9.*0D (When optional ±*0.*0D lens is in use) Cylinder power range: 0 to－6.*0D, with minimum reading 0.*5D or 0.*2D (when auxiliary lens is in use) 0 to－8.*0D (when－2.*0D auxiliary lens is in use) Astigmatic axis scale: 0 to **0° in 5° steps Cross cylinder:±0.*5D, reversal type (synchronized with astigmatic axis) Rotary prism: 0 to *0ΔD in 1ΔD step Interpupillary adjustment: *8mm to *0mm in 1mm step (right and left synchronized) Forehead rest adjustment: *6mm backward and forward Convergence: The optical axes of the lenses are aligned at a distance of **0mm from the vertexes of the corneas (2mm each for right and left inward) Interpupillary distance enabling convergence=*7mm to *0mm Corneal distance device: 2mm forward and 5mm backward from standard plane; with scale Effective field of view: *9mm Weight: 5kgs Size: **3mm×**5mm×*5mm