According to the Centers for Disease Control and Prevention, 30% of Americans are considered to be obese.
That's a lot of people who face daily challenges in situations that others take for granted—getting up from a chair, fitting into a movie or airline seat, or finding clothes that fit or healthcare facilities that provide medical services sensitive to their condition.
Obese patients impact hospitals in two ways: first, by electing to undergo surgical intervention procedures that result in weight reduction, and second, by routine use of healthcare facilities, whether they be emergency rooms, nursing units, or doctors' offices.
For these reasons, the many accommodations that are made in bariatric-specific units must find their way into all other hospital areas.
A near object (for example, a computer screen) appears large in the field of vision, and the eye receives light from wide angles.
Because of this, a person might wear reading glasses around their neck, scatter multiple pairs around the house or wear bifocals all the time.
The ciliary muscle contracts making the lens more convex, shortening its focal length.
The pupil constricts in order to prevent diverging light rays from hitting the periphery of the retina and resulting in a blurred image.
The accommodation reflex (or accommodation-convergence reflex) is a reflex action of the eye, in response to focusing on a near object, then looking at distant object (and vice versa), comprising coordinated changes in vergence, lens shape and pupil size (accommodation).
It is dependent on cranial nerve II (afferent limb of reflex), superior centers (interneuron) and cranial nerve III (efferent limb of reflex).