Iridoplegia

Labelled Diagram of the Eye

Labelled diagram of the structure of the retina

Iridoplegia is the term used to refer to paralysis of the iris of the eye. This is usually associated with cycloplegia, which is paralysis of the ciliary muscle of the eye.

Both iridoplegia and cycloplegia can result from injury to the eye, inflammation of parts of the eye, or in some cases the use of pupil-dilating drops.

In the case of iridoplegia due to injury, the pupil of the affected eye is generally larger than usual and changes very little - if at all - in response to stimuli such as light and drugs that would normally result in changes to the size of the pupil.

More about Ophthalmology:

This section includes short definitions of many diseases, disorders, and conditions of the eyes and visual system.
For definitions of other terms in this category, choose from the list to the left (but note that this is not a complete/exhaustive list).

Other related pages include

For further information see also our pages of books about ophthalmology.

The following books may also be of interest:

The Aging Eye (Harvard Medical School)
MCQ Companion to the Eye (Textbook)
The Secret of Perfect Vision: How You Can Prevent and Reverse Nearsightedness
What Your Doctor May Not Tell You About(TM) Glaucoma: The Essential Treatments and Advances That Could Save Your Sight

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