Grand Seiko WAM5500 Auto Refractor Keratometer

Refractive Measurement Range   

Sphere (S)         -22 ~ +22D                   (step: 0.01/0.12/0.25D)

Cylinder (C)      0 ~ 10D            (step: 0.01/0.12/0.25D)

Axis (A)            0 ~ 180°            (step: 1°)

Measurement Accuracy  

Sphere  between -10D ~ +10D: ±0.25D

beyond ±10        : ±0.5D

Cylinder            ±0.25D

Keratometric Measurement Range           

Radius of Corneal Curvature          5.0 ~ 10.0mm                (step: 0.01mm)

Corneal Refraction        

33.75 ~ 67.5D               (step: 0.01/0.12/0.25D)       (a refractive index of cornea: n = 1.3375)

Cylinder            0 ~ ±9D

Axis      0 ~ 180°           (step: 1°)

Measurement range of pupil diameter       φ2～φ8mm（0.1mm　Step）

Vertex Distance  0, 10, 12, 13.5, 15mm

Minimum Pupil Diameter            ø 2.3 mm

PD Measurement            Measurement range        85mm       (step: 1mm)

Refractive measurement

Keratometric measurement 

Continuous measurement approx. 0.04sec. approx. 0.07 sec. approx. 0.07 sec. approx. 2.2 sec.

Printer  Thermal line printer with automatic cutter (paper width 58mm)

Internal Monitor 5.6 inch LCD monitor (color)

Shifting Range for Sliding Body  back/forth ±17mm    right/left ±43mm    up/down ±15 mm

Vertical Adj. Range for Chin Rest ±30mm

Dimensions        327 mm (W) x 496 mm (D) x 515 mm (H)

Data Output       RS-232C interface Video Terminal

Power Source    100 ~ 240V 50/60Hz

Consumption     80VA

Power Saving Function   OFF, 3, 5, 10min.(switchable)

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