What type of lenses are described by the code V2100?

The code V2100 identifies a specific type of single vision lens. Single vision lenses are designed to correct vision at only one distance, either for reading or distance vision, providing a uniform optical power throughout the entire lens. This simplicity makes them typically less complex compared to other types of lenses, which accommodate multiple focal points.

In contrast, bifocal lenses consist of two distinct optical powers, typically incorporating a segment for near vision that is visibly separate from the distance portion. Multifocal lenses, which encompass both bifocal and trifocal designs, are made to provide vision correction for multiple distances within one lens. Trifocal lenses specifically include three distinct optical sections for close, intermediate, and far vision.

Therefore, the unique designation of V2100 aligns with the characteristics of single vision lenses, confirming that the answer is appropriate for the question concerning the type of lenses referred to by that code.