LANTAO 22pcs Trial Lens Set ADD+1.00D~3.50D with gap of 0.25D Ophthalmic Trial Lens Case For Visual Acuity Test Progressive Full Size Lens Shiny metal rim Clear Axis Marking

Description

Introduction: The product should be used in conjunction with the National Standard 232 or 266 refractive lens box Preferably with metal ring (D38mm) refractive lens box With adjustable pupil distance test frame for trial wear Identification mark: Horizontal reference line: temporary mark, corresponding to the lens horizontal line, check whether the astigmatism axis of lens is correct. Invisible permanent mark is used to restore temporary markings. The distance between two points is 34mm. The remote measuring area is used to detect the far degree of lenses. The near measuring area is used to detect the near luminosity and ADD of lenses