Manual Optometry Refractor Optical Vision Tester Device Phoropter

Description

Manual Optometry Refractor Optical Vision Tester Device Phoropter
【Technical Parameter】
1. Spherical lens power range: +16.75D to -19.00D, the smallest power is 0.25D or 0.12D (when using +0.12D auxiliary lens or choosing ±0.12D lens)
2. Range of astigmatism: 0 to -6.00D, the minimum reading is 0.25D or 0.12D (when using the attached lens) 0 to -8.00D (when using the attached lens -2.00D)
3. Astigmatism axis dial: 0 to 180°, each interval is 5°
4. Cross cylinder: exchange type (used at the same time as the astigmatism axis) ±0.25D, or ±0.50D
5. Rotating prism: each interval is 1∆D, 0 to 20∆D
6. Interpupillary distance adjustment: 48mm to 80mm, each interval is 1mm (the same for left and right)
7. Adjustment of the front desk: 16mm forward and backward each
8. Focus: within 400mm from the tip of the cornea (2mm to the left and right inner sides), the axis of the optical lens is in a straight line. Can focus from 57mm to 80mm within the interpupillary distance
9. The method of testing the corneal distance: starting from the standard platform, use a scale to measure the front 2mm and the back 5mm
10. Effective field of view: 19mm
11. Weight: 5kg
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On Aug-10-20 at 00:56:07 PDT, seller added the following information: