2.Axis scale: left scale: 130 °~ 0 °~ 120 °; right scale: 50 °~ 180 °~ 60 °.The axis scale increases anticlockwise along the axis of the frame, and the marking interval is 5°.
3.Effective internal aperture of frame: Φ 33.5 mm.
4.The number of lenses that can be inserted into the left and right frames: 5 (the front is 3 and the back is 2).
5.Rotation degree of optical axis of lens in inner ring of frame: 360 °
6.The nonparallelism between the optical axis of the lens and the geometric axis of the frame: ≤ 2.5 °.
7.The difference between the optical center and the geometric center of the lens: ≤ 0.5 mm.
8.Displacement of the lens relative to the geometric center of the frame: ≤0.3 mm.
9.Adjustment range of nose pad: adjustable length: 0~25 mm; angle: arbitrary angle.
10.Adjustable length range of the left and right frame leg: 0~30 mm.

Instructions For Use

1. Pupil distance adjustment
(1) Rotate the left and right pupil distance knobs respectively according to the pupil distance of the patient.
(2) According to the "▽" instruction, the pupil distance can be adjusted to the required pupil distance position.2. Pupil height adjustment
(1) Wear trial frame and observe the pupil center of the patient.
(2) Pull out the pupil height adjustment knob (the force should not be too large when pulling out).
(3) Turn the knob left and right to move the nose support up and down until the optical center of the trial wearing frame is consistent with the center of the pupil.
(4) After adjustment, push the knob to fix and lock it.