When performing the pupillary reflexes, describe the position of the subject and environment

the subject should be comfortable and relaxed in a well lit area
the subject should be seated, relaxed in a dimly lit area with one eye closed
the subject should be seated, relaxed in a well lit area with one eye closed
the subject should be comfortable and relaxed in a dimly lit area, the subject should shield their eyes by placing their hand vertically between the eye and nose

Question

02-07-2019
Physics

contestada

When performing the pupillary reflexes, describe the position of the subject and environment

the subject should be comfortable and relaxed in a well lit area
the subject should be seated, relaxed in a dimly lit area with one eye closed
the subject should be seated, relaxed in a well lit area with one eye closed
the subject should be comfortable and relaxed in a dimly lit area, the subject should shield their eyes by placing their hand vertically between the eye and nose

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edwardsjames342 edwardsjames342 · Answer 1 · 2019-07-02T19:36:22+02:00

Answer:

The pupillary light reflex (PLR) or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity (luminance) of light that falls on the retinal ganglion cells of the retina in the back of the eye, thereby assisting in adaptation of vision to various levels of lightness/darkness.

A greater intensity of light causes the pupil to constrict (miosis/myosis; thereby allowing less light in), whereas a lower intensity of light causes the pupil to dilate (mydriasis, expansion; thereby allowing more light in)

Explanation: