Medical dictionary. 2011.
Pupil dilation test — An examination that enables an eye care professional to see more of the retina, the light sensitive layer of tissue at the back of the eye. Dilating (widening) the pupil permits the retina to be examined for signs of disease. To do this, drops… … Medical dictionary
Test, pupil dilation — An examination that enables an eye care professional to see more of the retina, the light sensitive layer of tissue at the back of the eye. Dilating (widening) the pupil permits the retina to be examined for signs of disease. To do this, drops… … Medical dictionary
Pupil — The pupil is the hole that is located in the center of the iris of the eye and that controls the amount of light that enters the eye.Cassin, B. and Solomon, S. Dictionary of Eye Terminology . Gainsville, Florida: Triad Publishing Company, 1990.]… … Wikipedia
Dilation — (or dilatation) refers to an enlargement or expansion in bulk or extent, the opposite of contraction. It derives from the Latin dilatare, to spread wide . In physiology: Pupillary dilation, dilation of the pupil of the eye Cervical dilation, the… … Wikipedia
dilation — [dī lā′shən, dilā′shən] n. 1. a dilating or being dilated, as of the pupil of an eye, a blood vessel, or the cervix during childbirth: cf. DILATATION 2. a dilated part … English World dictionary
Pupil — The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris. The pupil determines how much light is let into the eye. Both pupils… … Medical dictionary
Dilation, pupil (test) — This examination enables your eye care professional to see more of your retina, the light sensitive layer of tissue at the back of your eye. Dilating (widening) the pupil permits the retina to be examined for signs of disease. To do this, drops… … Medical dictionary
pupil — pupil1 pupilless, adj. /pyooh peuhl/, n. 1. a person, usually young, who is learning under the close supervision of a teacher at school, a private tutor, or the like; student. 2. Civil Law. an orphaned or emancipated minor under the care of a… … Universalium
Dilation — The process of enlargement or expansion. The word "dilatation" means the same thing. Both come from the Latin "dilatare" meaning "to enlarge or expand." * * * 1. Physiologic or artificial enlargement of a hollow… … Medical dictionary
dilation — noun 1. a lengthy discussion (spoken or written) on a particular topic • Derivationally related forms: ↑dilate • Hypernyms: ↑discussion, ↑treatment, ↑discourse 2. the act of expanding an aperture the dilation of the pupil of the eye … Useful english dictionary
