spasm of accommodation

(redirected from Accommodative spasm)

spasm of ac·com·mo·da·tion

excessive contraction of the ciliary muscle.

spasm of accommodation

A spasm of the ciliary muscle, usually due to excessive strain from overuse and common in myopia.
See also: spasm
References in periodicals archive ?
Caption: Figure 5 A case of accommodative spasm in a 17-year-old.
Persistent accommodative spasm nine years after head trauma.
Another approach to the treatment of accommodative spasm. Am Orthopt J.
There have also been several case studies reporting the rare but significant and related development of persistent bilateral accommodative spasm in individuals with TBI [21-23].
Persistent accommodative spasm after severe head trauma.
These symptoms could be the result of accommodative spasm (Mon-Williams, Wann, & Rushton, 1993) or from the strain of too great a mismatch between the accommodative stimulus and the vergence stimulus (Wann, Rushton, & Mon-Williams, 1995); in this case, a meter angle (MA) of 0.0 for the vergence stimulus versus 2.0 D for the accommodation stimulus.
From the expected cases of presbyopia to less common presentations, including accommodative spasm and inertia, it is rare for an optometrist to go through a day of practice without coming across some form of accommodative condition.
Although accommodative insufficiency has been the most common accommodative abnormality studied in TBI [11], several authors have reported overaccommodation, also termed accommodative excess, pseudomyopia, or even frank "accommodative spasm" [6].
In cases were convergence or accommodative spasm are suspected, a cycloplegic refraction should be carried out.
An "against" movement suggests accommodative spasm (see Table 3).
The prevalence of headache among computer users observed in another study was 13%.4 The patho-physiology of headache associated with prolonged computer use resides within the ocular surface abnormalities, accommodative spasms and dry eyes.6