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Phoroptor                                   NEXT PAGE
MODEL VT-5
 
Main 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 in use)
+26.75D to -29.00D(when optional \10.00D lens is in use)
Cylinder power range:
0 to C6.00D,with minimum reading 0.25D or 0.12D(when auxiliary lens is in use)
0 to C8.00D(when C2.00D 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 20ΔD in 1ΔD step
Auxiliary lens:

Right eye
Left eye
O(Open aperture)
OC(Occluder)
\ .50(Fixed cross cylinder)
6ΔU(6 prism dioter base Up)
10ΔU(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 field of view:19mm


MODEL VT10
 
Main 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 in use)
+26.75D to -29.00D(when optional \10.00D lens is in use)
Cylinder power range:
0 to C6.00D,with minimum reading 0.25D or 0.12D(when auxiliary lens is in use)
0 to C8.00D(when C2.00D 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 20ΔD in 1ΔD step
Auxiliary lens:

Right eye
Left eye
O(Open aperture)
OC(Occluder)
\ .50(Fixed cross cylinder)
6ΔU(6 prism dioter base Up)
10ΔU(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 field of view:19mm


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