USAGES: |
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. |
FEATURES: |
1、Unique design of butterfly-shape appearance. |
2、Capable of checking up all-sided visualfunctions, accurate and comfortable in measurement. |
3、Exquisite manufacturing technique, with comfortable feel. |
4、High grade plated-film used in all optic leses. |
MAIN TECHNICAL INDEXES |
1、Sphere power: |
Range:+1675D～－19.00D
Step:0.25D |
When applied with auxiliary lens +0.12D
Step:0.12D |
2、Cylinder power: |
Range:0～－6.00D
When applied with auxiliary cylinder lens －2.00D:
0～－8.00D
Step:0.25D |
When applied with auxiliary cylinder lens +0.12D
Step:0.12D |
3、Cylinder axis: |
Range:0～180° |
Step:5° |
4、Cross cylinder: |
±0.25D |
5、Rotary prism: |
Range:0～20△ |
Step:1△ |
6、PD adjustment: |
50～75mm |
Step:1mm |
7、Convergence adjustment: |
∞,380mm(When PD 64mm) |
8、Forehead reat adjustment: |
16mm |
9、Vertex distance: |
13.75mm
From corneal point to standard lens surface |
