Medical dictionary. 2011.
multifocal lenses — lenses in which the power (see dioptre) of the lower part gradually increases towards the lower edge. There is no dividing line on the lens as there is between the upper and lower segments of bifocal lenses. The wearer can see clearly at any… … The new mediacal dictionary
multifocal — Relating to or arising from many foci. * * * mul·ti·fo·cal .məl ti fō kəl adj 1) having more than one focal length <multifocal lenses> 2) arising from or occurring in more than one focus or location <multifocal seizures> * * *… … Medical dictionary
multifocal — ˌ adjective Etymology: multi + focal 1. : having more than one focal length multifocal lenses 2. : arising from or occurring in more than one focus or location multifocal convulsions … Useful english dictionary
Линзы Многофокальные (Multifocal Lenses) — линзы, преломляющая сила которых (см. Диоптрия) постепенно увеличивается в направлении снизу вверх. В этих линзах не существует никакой разграничительной линии, разделяющей ее верхний и нижний сегменты, как в бифокальных линзах. Человек, носящий… … Медицинские термины
ЛИНЗЫ МНОГОФОКАЛЬНЫЕ — (multifocal lenses) линзы, преломляющая сила которых (см. Диоптрия) постепенно увеличивается в направлении снизу вверх. В этих линзах не существует никакой разграничительной линии, разделяющей ее верхний и нижний сегменты, как в бифокальных… … Толковый словарь по медицине
Cataract surgery — Intervention Cataract in Human Eye Magnified view seen on examination with a slit lamp ICD 9 CM … Wikipedia
Intraocular lens — An intraocular lens (IOL) is an implanted lens in the eye, usually replacing the existing crystalline lens because it has been clouded over by a cataract, or as a form of refractive surgery to change the eye s optical power. It usually consists… … Wikipedia
Glasses — Glasses, also called eyeglasses or spectacles, are frames bearing lenses worn in front of the eyes, normally for vision correction, eye protection, or for protection from UV rays.Modern glasses are typically supported by pads on the bridge of the … Wikipedia
Progressive lens — View through a progressive lens at some distance. In normal use, a much smaller section of the glass is used, so that the distortion is much smaller. Progressive spectacle lenses, also called progressive addition lenses (PAL), progressive power … Wikipedia
Adjustable focus — eyeglasses compensate for the effects of presbyopia, lack of focusing, by providing on demand clarity at any desired distance.Two approaches can be found in the literature: electro optical (often utilizing liquid crystals as the active medium)… … Wikipedia
