What is pupillary reflex quizlet?

pupillary light reflex. the reduction of pupil size in response to light.

What are the types of pupillary reflex?

Pupillary reflex refers to one of the reflexes associated with pupillary function. These include the pupillary light reflex and accommodation reflex.

What is pupillary reflex in biology?

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/ …

What does the pupillary reflex test for?

A pupil reflex test is just one way to test whether a patient’s eyes are functioning normally. Abnormal results may indicate any number of problems. Some of these include an abnormally sized or shaped pupil, optic nerve damage, or other neurological concerns.

What is the pupillary response of the right eye when a light was shone into the pupil quizlet?

Both eyes cross when exposed to the light. The patient’s pupils are fixed and dilated in response to light. Both pupils dilate in response to light. Both pupils constrict in response to light.

What is the apparent biological advantage of the pupillary light reflex?

What is the apparent biological advantage of the pupillary light reflex? The pupillary light reflex allows for light to enter the eye but not enough to hurt or damage the retina. It allows focus and detail reception and protection.

How do you assess pupillary light reflex?

Performing the Exam for Pupillary Responses

  1. Observe the pupil size and shape at rest, looking for anisocoria (one pupil larger than the other)
  2. Observe the direct response (constriction of the illuminated pupil)
  3. Observe the consensual response (constriction of the opposite pupil)
  4. Repeat with the opposite pupil.

What does pupillary mean?

: of or relating to the pupil of the eye.

Why is pupillary reflex called a reflex?

This light interacts with the structures and nerves of the eye to create images. Adjustments via the muscles connected to the lens, ciliary bodies, and muscles that make up the iris are stimulated by several nerves. This is known as the pupillary light reflex.

How do you test pupillary response?

What causes pupillary reflex?

The pupillary light reflex requires CN II, CN III, and central brain stem connections. Light shined in one eye stimulates retinal photoreceptors, and subsequently retinal ganglion cells, whose axons travel through the optic nerve, chiasm, and tract to terminate in the pretectum (pretectal nucleus).

How do you document pupillary light reflex?

III. Technique

  1. Check left eye response (direct and consensual) Shine light on left eye and check left pupil reflex. Shine light on right eye and check left pupil reflex.
  2. Check right eye response (direct and consensual) Shine light on right eye and check right pupil reflex.