For example, if you require more intense light for a task, you can move the light closer. Also, the adjustable-arm allows you to position the angle of light in such a way to eliminate glare. Illuminated magnification is the combination of a magnifying lens with a light source. There is a wide variety in the type and quality of both the magnifying lens and light source. Magnifying lenses come in numerous sizes and powers, with some having less distortion than others.
Proper lighting is equally important as magnification in achieving a good viewing situation.
A magnifying lens would be useless in the dark, so increasing light levels results in better vision. The better the quality of light used with a magnifying lens, the less magnification power is needed. When less magnification power is required, you can see a larger area under the lens. It is frustrating to have difficulty seeing details or to quit activities because you cannot see well enough. Proper lighting plus magnification helps you see the small details.