Related topics from Britannicafocusing
ability of the lens to alter its shape to allow objects to be seen clearly.eye, human
The image of an object brought close to the eye would be formed behind the retina if there were no change in the focal length of the eye. This change to bring the image of an object upon the retina ...
eye, human
It is essentially an increase in curvature of the anterior surface of the lens that is responsible for the increase in power involved in the process of accommodation. A clue to the way in which this ...
eye, human
Southwest Indian
Between 1680 and 1692 the Pueblos were free from foreign rule. When soldiers and missionaries returned they employed a divide and conquer process, overcoming each pueblo individually; by 1696 Spanish ...
Poland
Uprisings also were condemned as folly by conservatives in Galicia, where the Krakow historical school critically reinterpreted Poland's history. The conservatives were willing to cooperate with ...
New Zealand
State agencies provide limited financial assistance toward home purchases and renovation work, as well as subsidized rental accommodations for those on low incomes. The state also subsidizes ...
eye, human
In general, as has been indicated, pupillary constriction and accommodation occur together, in response to the same stimulus; a third element in this near response is, of course, the convergence ...
eye, human
Accommodation is an involuntary reflex act, and the ciliary muscle belongs to the smooth involuntary class. Appropriate to this, the innervation is through the autonomic system, the parasympathetic ...
space perception
When one looks at an object at a distance, the effort arouses activity in two eye-muscle systems called the ciliary muscles and the rectus muscles. The ciliary effect is called accommodation ...
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