Home > Optometry Instrument > Phoropter(View tester) > VT-10B Manual Phoropter

VT-10B Manual Phoropter

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Product Abstract:

Black &white colors are available.


Product Description

 

CE

 

Black &white colors are available.

 

Features:
■ Elegant design for the appearance and easy and flexible optical lens dials.
■ Precise optical lens with top-grade coating
■ When rotating risk is turning by sphere
■ Can make sphere power adjust in 3.00d big scope
■ Designed expediently and smartly for particular cross cylinder
■ Supplementary fittings of complete set could measure nearsight
■ With synthetic and overall inspecting functions on eyesight
■ Clear scale, convenient and durable operating
■ This is suitable for eyesight examination in spectacles shops, department of ophthalmology in hospitals, schools and enterprises

 

 

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 is 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)
Rotary prism:  0 to 20∆D in 1∆D step
Interpupillary adjustment:  48mm to 80mm in 1mm step (right and left synchronized)
Forehead rest adjustment:  16mm backward and forward
Convergence:
(2mm each for right and left inward)
The optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the corneas
Interpupillary distance enabling convergence: 57mm to 80mm
Corneal distance device:  2mm forward and 5mm backward from standard plane; with scale
Effective field of view:  19mm
Weight:  5kgs
Size:  291~323×315×85

 

 

Differences between VT-5A , VT-10A and VT-5B, VT-10B

 

◆Ⅰ. Material of components are different.Components of VT-5A,VT-10A are better than those of VT-5B,VT-10B.

 

 

 

 

◆ Ⅱ. Apperances are different

 

 

 

◆ Ⅲ. Assembling is different.

All components of VT-5A,VT-10A are selected carefully. Assembling is reasonable. Use comfortably.

Some components of VT-5B,VT-10B are B grade.They need to beresharpened when assembling.Use feeling is not so good as that of VT-5A,VT-10A.

 

 

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