Huanyu Retinoscope Schematic Eye Model Eye for Retinoscopy Practice, Optometry Teaching Tool for Optical Retinoscopy, Range of the Diopter: -5.00D to +4.00D

ACCURATE DIOPTER: The diopter of our schematic eye is accurate, with an error of less than 0.25 Unit D. Its adjustable range is plus 4.00D to minus 5.00D, 3 PUPIL SIZES: Our model eye has three difficulty levels with different pupil sizes:diameter3, diameter5, diameter7, which can simulate small pupils, ordinary pupils, and dilated pupils, PRECISE AND CLEAR AXIAL ANGLE: Degree of astigmatism axial angle disk: 0 to180 degrees, each line represents 5 degrees, and all are accurate and clear, ADJUSTABLE ANGLE: The angle of our model eye can be adjusted more than 90 degrees by adjusting the shaft screw, which is suitable for practitioners of different heights to practice and operate, 3 LAYERS OF ARC GROOVES: There are three layers of arc grooves in the front of our schematic eye, which can be used to place optometric lenses or preset astigmatism and axial cylinders