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Doctor insights on: Afferent Pupillary Defects

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What is afferent pupillary defect?

What is afferent pupillary defect?

Marcus-Gunn pupil: An afferent pupillary defect indicates a lesion in the afferent limb (retina or optic nerve) of the pupillary reflex. Such a lesion is best appreciated on the "swinging flashlight test." a lesion in the left optic nerve will decrease the perceived illumination in that eye, and when the flashlight is swung from the right to the left eye, the left pupil will appear to dilate slightly. ...Read more

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My ophthalmologist said that I have afferent pupillary defect (apd 5) and hippus, what does this means?

My ophthalmologist said that I have  afferent pupillary defect (apd 5) and hippus, what does this means?

Pupil changes: An afferent defect of the pupil refers to an abnormal dilation instead of constriction when light hits the eye. It is due to major loss of total light input in the affected eye such as massive retinal loss, optic nerve disease, etc. Hippus is a twitchy pupil jerkiness and sometimes is normal but can be seen in response to certain drugs. ...Read more

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My ophthalmologist said that I have afferent pupillary defect (apd 5) and hippus in my right eye, what does this means?

My ophthalmologist said that I have  afferent pupillary defect (apd 5) and hippus in my right eye, what does this means?

Hippus: Hippus is when you shine a light on the eye and the pupil constricts, then it opens back up... This bounciness is called hippus. Some say hippus is an early, mild apd. ...Read more

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Can you tell me the stimulus, receptors, and afferent pathways of hypovolemic shock?

Can you tell me the stimulus, receptors, and afferent pathways of hypovolemic shock?

Hypovolemic shock: Your question is too open ended and very broad to answer here. Please refer to the following article from medscape or wikipedia: http://emedicine.Medscape.Com/article/760145-overview or http://en.Wikipedia.Org/wiki/hypovolemia. ...Read more

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How can you best destroy small afferent nerve fibers in the nasopharynx/pharynx?

How can you best destroy small afferent nerve fibers in the nasopharynx/pharynx?

Why?: Afferent nerves take sensation from these areas. Losing sensation in these areas could cause severe swallowing and choking problems and loss of pain sensation. ...Read more

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What is meant by pupillary distance ?

What is meant by  pupillary distance ?

Space between eyes: This is a number needed by eyeglass makers to properly space the optical centers on eyeglasses and it is the exact distance between the centers of the two pupils when the eyes fixate at a distance. It is needed on a prescription from an optical shop (termed P.D.) and you would need it if you order eyeglasses online. ...Read more

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Recent pupillary distance was measured as 65; before it was always 63, as adult. Does this reflect an underlying health issue?

Recent pupillary distance was measured as 65; before it was always 63, as adult. Does this reflect an underlying health issue?

Not to worry: Pupillary distance measurements are not very accurate, so it is unlikely that you have a problem. In the rare instance where you might have a cyst in the sinus or a tumor behind the eye, you would see an eye bulging or would have double vision. ...Read more

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Can pupillary reaction present in blind people?

Can pupillary reaction present in blind people?

Usually: Except in the most severe cases, there is a pupillary reaction in blind eyes. ...Read more

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Is pupillary reaction present in blind people? Please, need some answers?

Is pupillary reaction present in blind people? Please, need some answers?

Depends : If all the visual fibers in one eye are lost, then the pupil will react depending upon the light shining upon the other eye (due to interconnected reflexes) (termed amaurotic pupil). Some can lose all vision and retain the pupillary fibers so the eye will react to light. If the eye is lowered in vision (legally blind) it can still react to light. Also some blindness is from trauma; fixed pupils ...Read more