|Color:||Black Or White For Option||Quality:||Top-grade Quality|
|Sphere Powers:||+16.75D To-19.00D||Cylinder Power Range:||0 To-6.00D|
|Astigmatic Axis Scale:||0 To 180° In 5° Steps||Cross Cylinder:||±0.25D|
|Rotary Prism:||0 To 20D In 1D Step||Forehead Rest Adjustment:||16mm Backward And Forward|
VT-5B Optometry Manual Phoropter Optical View tester Minus cylinder lenses Black/White for Option GD8702A
1. Top-grade quality View Tester
2. Elegant design of butterfly-shape appearance
3. High grade plated-film used in all optic lenses
4. This device is applicable to ophthalmology department of hospitals and spectacle stores for precision measurement of visual functions such as myopia, hyperopia, astigmatism, eyesight balance, heterophoria, stereoscopic vision and eyesight amalgamation
5. Two colors for optional
1. 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)
2. 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)
3. Astigmatic axis scale: 0 to 180° in 5° steps
4. Cross cylinder:±0.25D, reversal type (synchronized with astigmatic axis)
5. Rotary prism: 0 to 20∆D in 1∆D step
6. P.D. adjustment:48-80mm;Step:1mm
7. Forehead reat adjustment:16mm forward and backward
8. Convergence:The optical axes of the lenses are aligned at a diatance of 400mm from the vertexes of the corneas (2mm each for right and left inward)Interpupillary distance enabling convergence=57mm to 80mm
9. Corneal distance device:2mm forward and 5mm backward from standard plane;with scale
10. Effective field of view:19mm
Product & Service
Since from 2005, JingGong Optical started searching made in China optical instruments for optical wholesalers and chain stores, with many years’ experience and investment in this field, Now JingGong Optical is innovating, manufacturing & exporting a wide range of ophthalmic instruments, eyewear laboratory equipment, lab tools & accessories, if you are optical instruments wholesaler, optical shop, eye care hospital or lens laboratory, you can have best solutions from our instruments category.
In accordance with International & regional standards, JingGong Optical products are following ISO, CE & FDA instructions, also has warranty policy & maintenance service on each products, we are always working with customers to improve products and technology.
Our Vision: We are not going to save the world, we are not going to improve the eyesight of whole human being, but what we are concentrating on, is to provide our customers and end-users a precision, qualified, friendly-operated and lowest costed ophthalmology instruments and lens laboratory instruments.We are always hearing from our customers, to find every even small way to improve our products and service.
Guarantee:We absolutely understand you are worrying about the potential functional & quality problem of instruments you are buying from us, don’t worry, we carry out 100% QC before shipping, we also have guarantee for each product, buy from us means buy 100% satisfaction.
Staff:The employees who working for us, are with good background in optical industry, who was working in lens manufacturing, who was working in production line of eyewear, even has registered optometrist, our staff can think from different aspects instead of only one side.