Optician Practical Exam 2025 – Complete Practice Test Guide

The correct choice identifies "with motion" as not being a characteristic of plus lenses. Plus lenses are designed to converge light rays towards a focal point, which is essential for correcting hyperopia (farsightedness). When looking through plus lenses, objects may appear to be magnified and closer than they actually are, due to the convex shape of the lens.

Plus lenses typically have thicker edges compared to their centers. The curvature of the lens is such that it is thicker at the periphery, a feature that allows for the refraction needed to aid in vision correction for hyperopia. Thus, while "thicker edges" and "converging light" are indeed characteristics of plus lenses, "with motion" does not directly correlate to a defining feature of how plus lenses function.

In summary, the defining properties of plus lenses include their converging effect on light and their design for correcting hyperopia, which explains why "with motion," as a standalone characteristic, does not apply to plus lenses.