Eyedrop test

Eyedrop test
There are many types of eyedrops and many types of eyedrop tests. One of the most common eyedrop tests is pupil dilation. 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 are placed into the eye to dilate (widen) the pupil. After the examination, your vision may (or may not) remain blurred and bothered by the brightness of the sun for several hours. The pupil, the opening of the iris, 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. Dilation is the process of enlargement or expansion. The word "dilatation" means the same thing as dilation. Both come from the Latin "dilatare" meaning "to enlarge or expand."

Medical dictionary. 2011.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Test, eyedrop — There are many types of eyedrops and many types of eyedrop tests. One of the most common eyedrop tests is pupil dilation. This examination enables your eye care professional to see more of your retina, the light sensitive layer of tissue at the… …   Medical dictionary

  • Ciclosporin — Cyclosporin redirects here. For other types of cyclosporin, see Cyclosporins. Ciclosporin Systematic ( …   Wikipedia

  • Islamic view of Joseph — This is a sub article to Joseph (Hebrew Bible). For the singer see Yusuf Islam.: Yusef redirects here. Yusef ( circa 1610 BC 1500 BC?) [ [http://www.thetruthoflife.org/messengers jacob.htm The Truth of Life ] ] [… …   Wikipedia

  • List of unusual deaths — This article provides a list of unusual deaths ndash; unique or extremely rare circumstances ndash; recorded throughout history. The list also includes less rare, but still unusual, deaths of prominent people.Antiquity Note: Many of these stories …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”