Cycloplegia

Labelled Diagram of the Eye

Labelled diagram of the structure of the retina

Cycloplegia is the term used to refer to paralysis of the ciliary muscle of eye.

One important consequence of cycloplegia is the inability to focus, meaning to change the shape of the lens of the affected eye. This is often associated with the related condition of iridoplegia, which is paralysis of the iris and results in fixed pupil size (known technically as "mydriasis").

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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