Name: Retinoscopy Simulation Eye
Dioptric adjustment range: +4.00D~-5.00D
Pupil diaphragm: 3, 5, 7
Purpose: simulated optometry practice
Colour: Black
Weight: 448g
Dimensions: height 135mm, bottom diameter 74mm
Note: This product is manually adjusted and zeroed during adjustment, but the eyesight of the adjuster and the user are different. When you think there is a difference in the "zero" positioning of the product, you need to position zero according to your eyesight. Use a screwdriver to loosen the white screw on the top indicator piece and move the black indicator piece back and forth to set the "zero" degree, then tighten it with a screwdriver (but do not use too much force, otherwise it will buckle. If it causes buckling, please use glue to glue the black indicator piece. solid).