Universal Optical Trial Frame,Adjustable Optical Trial Lens Frame PD 48-80Mm,Eye Test Glasses Optometry Lens Frame for Test Optician - Holyavision, 1

• UPC   643708854676
• Adjustable interpupillary distance：Eye Optometry Trial Lens Frame The adjustable range of interpupillary distance of both eyes is 48 ~ 80 mm, the left and right interpupillary distance is 24 ~ 40 mm, the maximum scale is 1 mm and the adjustable range of single eye is 24 ~ 40 mm Ultralight trial frame：50g ophthalmic titanium can insert 5 lenses at the same time, 3 lenses in the front and 2 lenses in the back. improve the convenience of optometry and not much weight when using Adjustable pupil height：Through the pupil height adjustment knob on the test frame, it can be adjusted according to the pupil needs of different subjects Adjustable Optical Optic Trial Lens Frame：The anterograde angle of the test frame can be adjusted according to the different face shapes of customers, and the length of the temples can be adjusted, the scale is accurate and the calculation is convenient Eye distance measurement：It has the function of inter-eye distance measurement ruler, and the distance from the innermost lens to the corneal vertex can be accurately calculated by testing the ruler on the frame