This New updated Phorpter has top qualit y and we work with Essilor .
very delicate ,every piece glass we do several times cleaning to make sure its high precision .
It has wide measureing range, its range of standard cylinder lens can reach up to 6D with the revolution 0.25D. In the range of 20, accuracy will be lower than 0.5, using the rotary prism with trimming gear.
And P. D. Can be adjusted from 48mm to 75mm, quick switch between near P. D, between near visual angle and far visual angle.
Features:
Synchronal cross cylinder: Rotating of the cross cylinder is synchronal with the adjustment of the cylinder axis.
Convenient operation, clear scale: With the special design, you can switch to the appropriate lens quickly.
Multifunctional auxiliary lens: This multifunctional auxiliary lens includes: Red-Green lens, polarizer, prism, stenopeic lens, etc.
Fast and accurate conclusion: There are two spherical lens turntables with 0.25D and 3D diopter steps.
Measuring range: +16.75D~0~-19D. You can adjust it much more accurately if you use the 0.12 auxiliary lens.
| |
| Item and range of measurement: |
| Myopia: |
0 to -19.00 diopter in 0.25 diopter step (0.12 diopter step) |
| Hyperopia: |
0 to +16.75 diopter in 0.25 diopter step (0.12 diopter) |
| Astigmatism: |
0 to -6.00 diopter(-8.00 diopter) in 0.25 diopter step |
| Phoria and vergency: |
20 to 0 to 20 by 1 step; Inner 40; Outer |
| Near vision test: |
Main optical axes of both lenses converges by means of a tilt mechanism at 40cm in front of the eyes at 64mm P. D. If P. D. for far vision is less then 54mm, converging operation stops. |
| Binocular balance test: |
Rotary prism and polarizing lens methods are |
| P. D : |
48 to 75mm by 1mm step |
| Level adjustment: |
More than 4.5 for right and left banks |
| Dimensions: |
335(at 64mm P. D. setting) 97 294mm |
| Auxiliary lens: |
| O. Q: |
Open aperture |
| R: |
Retinoscopic lens; +1.50 diopter spherical lens(for 67cm) |
| P: |
Polarizing filter. Used for polarizing testing of phoriz, Binocular balance of stereoscopic vision. |
| RMV: |
Red Maddox rod is set vertically. |
| WMV: |
White Maddox rod is set vertically. |
| WMH: |
White Maddox rod is set horizontally. |
| RL: |
Red lens. |
| GL: |
Green lens. |
| PH: |
A 1mm diameter pinhole is provided. This lens is used to determine if Poor vision is due to refractive abnormality or other caused. |
| 6 U: |
6 diopter base up prism. Used for the tests such as horizontal phoria test. |
| 10 I: |
10 diopter base in prism. Used for the tests such as vertical phoria test. |
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