Pupil - Wikipedia, the free encyclopedia
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The pupil is an opening located in the center of the iris of the eye that allows light to enter the retina. It appears black because most of the light entering the pupil is absorbed by the tissues i...
en.wikipedia.org/wiki/Pupil
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Discussion on changes in pupil size; how the retina handles light input ... Optical system | Optical characteristics | The eye muscles | Pupil size | The retina | Visual acuity...
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www.pc.ibm.com/ww/healthycomputing/vdt13eyed.html
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Discussion on pupil size and acuity and accomodation ... Pupil Size; One of the main reasons that higher light levels improve acuity is that the pupil becomes smaller, reducing the effect of the eye's refractive errors.
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www.pc.ibm.com/ww/healthycomputing/vdt13eyec.html
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You should see a doctor if you have persistent, unexplained, or sudden changes in pupil size. The new development of different sized pupils may be a sign of a very serious condition.
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www.nlm.nih.gov/medlineplus/ency/article/003314.htm
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OBJECTIVE: To investigate the effects of intramuscularly administered hydromorphone hydrochloride and acepromazine on intraocular pressure (IOP) and pupil size (PS). ANIMALS STUDIED: Seventeen dogs free of clinically relevant ocular abnormalities.
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www.medscape.com/medline/abstract/12641847
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PURPOSE: To evaluate the long-term changes in pupil size after implantation of an Artisan phakic intraocular lens for correction of high myopia. ... PURPOSE: To evaluate the long-term changes in pupil size after implantation of an Artisan phakic intraocular lens for correction of high myopia. PATIENTS AND METHODS:
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www.medscape.com/medline/abstract/17287666
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This happens because the muscles in the iris (the coloured part) close in to make the pupil smaller when there is to much light to protect the little cells in your eyes. It also happens vice versa to make the pupil bigger when there is litt...
http://wiki.answers.com/Q/Why_does_the_pupil_change_siz...
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As it gets darker, pupils get bigger. (They also get bigger when viewing something the person likes)
http://wiki.answers.com/Q/How_the_size_of_the_pupil_cha...
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Leigh, There are several things which can cause a difference in pupil size. Most of these are "physiologic" which means they are varients of normal. This is usually the case if the difference in size between the two pupils is less than 1 mm. Nothing needs to be done in this case.
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www.medhelp.org/forums/eyecare/archive/326.html
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