Semifinished Sphere Ophthalmic Lens Blank

Semifinished sphere ophthalmic lens blanks are a type of lens material used in the production of eyeglasses and other ophthalmic devices. They are part of the supply class Ophthalmic Instruments, Equipment, and Supplies, which falls under the supply group Medical, Dental, and Veterinary Equipment and Supplies.

These lens blanks are typically made from high-quality optical materials such as glass or plastic. They come in a spherical shape, which means they have the same curvature across the entire surface of the lens. The term "semifinished" refers to the fact that these blanks have been partially processed but still require additional shaping and finishing to fit specific prescriptions and frame styles.

Ophthalmic laboratories and optical manufacturers use semifinished sphere ophthalmic lens blanks as a starting point for creating custom eyeglass lenses. The blanks are cut, ground, and polished to the desired prescription and shape, and then inserted into eyeglass frames to provide corrective vision for individuals with refractive errors such as nearsightedness, farsightedness, or astigmatism.

These lens blanks are an essential component in the production of ophthalmic devices and play a crucial role in providing clear and accurate vision correction for individuals in need of eyeglasses.