opacity /opac·i·ty/ (o-pas´it-e)
opacity
opacity
1. the condition of being opaque.
2. an opaque area.
o·pac·i·ty ( -p s  -t )n. 1. The quality or state of being opaque. 2. An opaque or nontransparent area, as of the cornea. |
opacity
[ōpas′itē]
Etymology: L, opacitus, shadiness
pertaining to an opaque quality of a substance or object, such as cataract opacity.
opacity
1. the condition of being opaque, e.g. corneal opacity, lenticular opacity.
2. an opaque area.
3. radiopacity is the capacity of a substance to absorb radiation, rather than permit its passage.
opacity
The condition of a tissue or structure which is not transparent, or being opaque. The location of an opacity within the eye can be determined with a slit-lamp. It can also be determined using an ophthalmoscope and asking the patient to look up or down. If the opacity moves very little, or not at all, it is situated in the lens. If the opacity moves in the same direction as the eye it is situated in front of the lens and if it moves in the opposite direction it is situated in the vitreous humour. See cataract; muscae volitantes; corneal ulcer.
opacity
Medtalk A clouded or opaque area. See Corneal opacity.
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