When inspecting various small items, such as handicrafts, jewelry, or stamps, magnifying glasses use the principle of convex lenses to magnify objects, providing users with clear text and images, especially helping people with poor vision, such as the elderly or those with eye diseases such as retinal degeneration.

In archaeology, scientific research, and laboratory work, magnifying glasses can be used to observe fossils, specimens, and other research materials. In biological research and medical examinations, they can provide a deeper understanding of details.

A magnifying glass can be said to be an indispensable visual enhancement tool.