2pcs Round Optical Cross Cylinder Lens Tool Set Diopters Optical Instruments Diopters Kit (0.25/0.5)
$ 9.99
Description2 lenses with opposite axial refractive power, usually used for astigmatism. Place the cross cylindrical lens on the cylindrical lens money to make an axis coincide with the cylindrical lens axis, and then reverse the cross cylindrical lens to rotate the axis 90 degrees.Feature- Color: As shown.- Material: Copper and Glass.- Size: About 10.83.80.4cm.- Handle Length: About 70mm.- and high quality.- Made of copper and glass material.- When correcting the axial direction, the two axes of the cross cylindrical lenses can be placed at 45 degrees of the cylindrical lenses.- Use for Optometry.
