266 pcs Optical Trial Lens Set Plastic Rim Aluminium Case + Free Trial Frame

Trial Lenses - The 266pcs trial lenses are made of glass with a plastic rim, which gives accurate diopter and a high light transmittance, very important for optometrist and vision testers. Plastic Rim - Features a 26 mm inner diameter and 38 mm outer diameter, providing a light and durable use experience, making the test result accurate. Easily-Distinguished Design - Colorful plastic rims are helpful for distinguishing lenses with different functions. Each lens handle is pasted with markings, and the lens power is printed on the plastic lens tray. Aluminum Box - This case is made of premium aluminum with a combination lock. The lock comes factory set to 000. Open it by pushing the button outward and reset the combination to whichever 3 digits you like while pushing the button inward. Please remember the password you set, or you will no longer be able to open or close it. Widely used - It is very useful for optometrists, vision testers and household use to exam a patient’s refractive error - including hyperopia, myopia, presbyopia, astigmatism, strabismus or color blindness.