Visual Chart

Features: Top-grade quality View Tester in Far East Elegant design butterfly-shape appearance, High grade plated-film used in all optic lenses. This deivce is applicable to ophthalmology department of hospitals and spectacle store for precision measurement of visual functions such as myopia, hyperopia, astigmatism, eyesight balance, heterophoria, stereoscopic vision and eyesight amalgamation Specification: Sphere power range:+16.75D to 19.00D w/minimum reading 0.25D or 0.12D (when using +0.12D auxiliary lens or optional±0.12D lens) Cylinder power range:0 to -6.00D, w/minimum reading 0.25D or 0.12Dï¼?auxiliary lens) 0 to -8.00D(-2.00D auxiliary lens) 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 steps P.D. adjustment:48-80mm; step 1 Forehead rest adjustment:16mm Convergence:the optical axes of the lenses are aligned at a distance of 400mm from enable convergence=57mm to 80mm. Corneal distance:2mm forward and 5mm backward from standard plane with scale? Effective field of view:19mm Product size:291-323mm*315mm*85mm Package size:470mm*440mm*220mm N.W./G.W.: 5kgs / 6.5kgs

Supplier: Combined table, phoropter, automatic phoropter, automatic refractometer, keratometer, automatic, manual lens drilling machine, lens meter, automatic scanning edging machine, full automactic lens edger, manual edger, auto chart projector, lcd visual acuity chart, pd meter, the near visual chart, slit lamp, trial lens set, ophtalmoscope, retinoscope, centering position detector, ultrasonic cleaner, lens groover, cutting machine, polishing machine, frame heater, uv test, color machine, led distance visual acuity charts, dyeing machine, eyesware tools, optical instrument accessories
Buyer: Lens tools