Scicalife Optical Flipper, Optometry Plastic Flip, Trial Lens Optometry Instrument Flip for Near Vision Amblyopia Confirmation Test (Black)

-Material: The trial lens set is made of high-quality ABS material, which is light and can be used by you for a long time at will, with a long service life;
-Function: Optical fins can improve visual clarity and make your eyes more comfortable, suitable for optometry places, optical shops, etc.
-Usage: Although the design of the optical flip prescription plastic flip lens is simple, it is very practical in use, which can help you test for near vision and amblyopia with adjustable interpupillary distance
-Easy to use: to use, just put the notch on the nose, as close to the eye as possible, then if your pupil is in the mirror, find the middle, read the line closest to the middle of the pupil;
– Measuring range: 0-100 mm. When you want to buy glasses online, pd ruler can help you.