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Specifications
supply a full series high quality optical/ophthalmic/medical instrument,CE approvaled. The trial frame
The trial frame has several knuckle screws adjustments which make it possible to adapt the frame to various shapes of patients' heads. In the frame there are two clips, each of which can hold up to four lenses so as to combine an appropriate diopter for each eye. The axis of cylindrical lenses and prism lenses can be changed by turning the knuckle screws and the position of axis can be determined from the circular scale on both sides of the frame, which read 0 on the left of the horizontal meridian, 180 on the right and 90 on the vertical meridian. By turning the knuckle screws on both sides of the upper bar the patient's puil distance can be adjusted. By turning the knuckle screw. In the middle of the frame a comfortable nose fit can be attained.
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