Reading glasses, also called spectacles or reading glasses, are visual eyewear, composed of hard-padded, glass or plastic lenses fixed in a special frame with a movable lens, usually hinged on both sides over either the ears or nose, and holding them in front of an individual’s eyes. Eyewear is designed to protect the eyes by redirecting light when it hits the eye through its lenses. Reading glasses were first invented in the 17th century, as a method to help readers see short print. The term “reading glasses” derives from the habit of reading small print while outdoors. They are still popular with many people who like to use eyewear for the purpose of reading print, especially newspapers, magazines, and books.
Presbyopia is related to presbyopia, the aging process that can affect individuals as they age. This type of eye problem occurs when the brain’s ability to focus becomes less efficient over time. As a result, objects that are seen clearly today, may be blurred at some time in the future reading glasses online. In most cases, presbyopia is a condition that develops slowly over time, but can be aggravated by certain activities such as reading or computer use, exposing the eyes to longer and brighter lights. Individuals with presbyopia may have difficulties with fine print, although they tend to do well with dense print, because the eyes adjust better to the visual clarity of such material.
Reading glasses also differ from diopters, which are corrective lenses that enable readers to see close up objects. Unlike diopters, readers with glasses may not see details that are within their line of sight. As an example, a viewer focusing on a leaf through a reading glass may not see the leaves’ frond along the edge of the glass. Because some diopters also allow a person to focus on a distant object, some types of reading glasses can also act as a near-hand monitor, allowing the person to see a nearby object that is being looked at while they are reading.