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VT-5B

 

Specifications:
Sphere powers range: +16.75D,with minimum reading 0.25D or 0.12D

                                    (when +0.12D auxiliary lens or optical ±0.12Dlens is in use)
                                    +26.75D to -29.00D(when optical ±10.00Dlens is in use)
Cylinder powers range:0 to -6.00D, with minimun reading 0.25D or 0.12D
                                     (when auxiliary lens is in use)
                                     0 to -8.00D (when -2.00D auxiliary is use)
Astigmatic axis scale: 0 to 180°in 5°steps
Cross cylinder   : ±0.25D, reversal type(synchronized with astigmatic axis)
                            ±0.50D optical
Rotary prism     : 0 to 20△ Din 1△ step
Auxilisry        :

Right eye

Left eye

O (0pen aperture)
OC (Occluder)
±0.50(Fixed cross cylinder)

6△U (6 prism dioter base Up)0

10△I (10 prism diopter base In)

PH (Pinhole)
+0.12 (+0.12D sphere lens)

RL(Red filter)
RMH (Red maddox rod, horizontal)
RMV(Red maddox rod, vertical)

GL(Green filter)
WMH(White maddox rod,horizontal)
WMV(White maddox rod,vertical)

P 45°(Polarizing filter, axis 45°)
P 135°(Polarizing filter, axis135°)
R(Retinoscopic lens.+2.00D,for 50cm)

Interpupillary adjustment: 48mm to 80mm in 1mm steo (right and left synchronized)
Forehead rest adjustment: 16mm backward and forward
Convergence :The optical axces of the lenses are aligned at a distance of 400mm from the vertexes of the corneas

                       (2mm each for right and left inward)
Corneal distance device : 2mm forward and 5mm backward from standard plane; with scale
Effective field of view  :19mm