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Mammals, birds and reptiles vary the optical power by changing the form of the elastic lens using the ciliary body (in humans up to 15 dioptres).

Fish and amphibians vary the power by changing the distance between a rigid lens and the retina with muscles.

Even in his most accommodating mood he inspires a dread of treachery.

With an accommodating chaperon who knew no German, the couple could do and say what they pleased.

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'accommodating.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors.

Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies.

In this, distances vary for individuals from the far point—the maximum distance from the eye for which a clear image of an object can be seen, to the near point—the minimum distance for a clear image.

Accommodation usually acts like a reflex, including as part of the accommodation-vergence reflex, but it can also be consciously controlled.

Current non-surgical treatment options include reading spectacles (either mono or varifocal) and contact lenses (either multifocal or monofocal for monovision), but many of these patients, spectacle independent previously, do not easily accept this unavoidable age-related life style change.

While corneal procedures for presbyopia are still under a serious debate regarding their long term outcomes and success rate, current surgical options mostly include refractive lens exchange by either monofocal IOLs for monovision or multifocal IOLs.

The dependency of accommodation amplitude on age is graphically summarized by Duane's classical curves.

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