[High-Quality Trial Lenses] - The 266pcs trial lenses are made of glass with a metal rim, which gives accurate diopter and a high light transmittance, very important for optometrist and vision testers.
[Large Metal Rim] - Features a 36 mm inner diameter and 38 mm outer diameter, providing a wide field of vision, making the test result more accurate. Each lens handle is engraved with markings, and the lens power is printed on the tray.
[Hinges & Tray] - The case cover can be suspended at an angle by its hinges. The wooden tray with soft red velvet is very tactile and can prevent the lens from getting scratched.
[PU Leather Box] - This case is made of premium PU leather 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.