Detailed Product Description

Specifications

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 in use)

+26.75D to -29.00D   (when optional ±10.00D lens is in use)

Cylinder power range:

0 to 6.00D,with minimum reading 0.25D or 0.12D  (when auxiliary lens is in use)

0 to 8.00D    (when 2.00D auxiliary lens is in use)

Astigmatic axis scale:    0 to 180° in 5° steps

Cross cylinder: ±0.25D,reversal type   (synchronized with astigmatic axis)   ±0.50D optional

Rotary prism: 0 to 20D in 1D step

Right eye	Left eye
O(Open aperture) OC (Occluder) ± .50(Fixed cross cylinder)
6U(6 prism dioter base Up)	10U(10 prism dioter base Up)
PH (Pinhole) + .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)
P45°(Polarizing filter, axis 45°) P135°(Polarizing filter, axis 135°) R (Retinoscopic lens.+2.00D,for 50cm)

Interpupillary adjustment:   48mm to 80mm in 1mm step(right and left synchronized)

Forehead rest adjustment:  16mm backward and forward

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)  Interpupillary distance enabling convergence=57mm to 80m

Corneal distance device:  2mm forward and 5mm backward from standard plane;with scale

Effective filed of view: 19mm