Corrective lens

A visual aid is an optical or opto- electronic device for vision improvement or rehabilitation of visual impairment. These include the glasses, as well as contact lens, magnifying glass or magnifying glasses.

In case of defects of the eye, such as macular degeneration, retinal changes, optic nerve atrophy, opacities of the lens, the cornea or of the vitreous, pigmentary disorders, color blindness, and nystagmus ( nystagmus ), the therapy in the context of rehabilitation primarily by adjusting appropriate visual aids (spectacles, contact lenses, edge filter glasses). Monoculars, hand magnifiers, magnifying glasses and magnifiers are some other devices ( low vision aids ) that come as part of the therapy used.

When detected defective vision while driving absolutely appropriate visual aids are used when the visual acuity falls below a certain value without correction ( rough visus ). A note is placed on the document. Such an indication can be both a support and a restriction on the license. Depending on where it may constitute an offense or an offense if, contrary to the registration no visual aid is worn.

Due to the increasing importance of computer applications Visual aids are also in demand in the computer field. The only computer-aided applications in this field are bildausschnittsvergrößernde applications ( magnifier ) and electronic reading aids ( screen reader), some of which are to be found in today's standard software already.

Other visual aids include night vision goggles, binoculars, reading stone, lorgnette or monocles.