Aspheric lenses utilize the optical principle of lens magnification to increase the operator's viewing angle and facilitate the observation of object details. They can also be used in conjunction with an indirect ophthalmoscope or slit lamp microscope to examine the posterior vitreous and fundus of the human eye. When used in conjunction with an indirect ophthalmoscope or a slit lamp microscope, the aspheric lens can clearly observe the retina, optic nerve, macula and blood vessels. The imaging has the characteristics of a wide field of view, a large image, a strong sense of three-dimensionality, and no contact with the eye surface (no contact with the cornea). Using high-quality, highly transparent optical glass, high contrast, less stray light, and more fidelity images. The mirror surface adopts super strong coating, which is wear-resistant and shatter-resistant. The mirror protection is waterproof and stain-resistant, making it easier to clean.
