RAPD meaning in Medical ?

Answer: What is Relative Afferent Pupillary Defect mean?

A relative afferent pupillary defect (RAPD), also known as a Marcus Gunn pupil, is a medical sign observed during the swinging-flashlight test whereupon the patient's pupils dilate when a bright light is swung from the unaffected eye to the affected eye. The affected eye still senses the light and produces pupillary sphincter constriction to some degree, albeit reduced.

Depending on severity, different symptoms may appear during the swinging flash light test:

Mild RAPD will presents as a weak pupil constriction initially, after which dilation continues to happen.

When RAPD is moderate, pupil size will remain, after which it dilates

When RAPD is severe, the pupil will dilate quickly

reference

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