Medical dictionary. 2011.
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iridoplegia — Paralysis of the musculus sphincter iridis. SYN: iridoparalysis. [irido + G. plege, stroke] complete i. paralysis of both the dilator and sphincter muscles of the iris. reflex i. absence of the … Medical 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