![Journal of Optometry and Ophthalmology on Twitter: "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 Journal of Optometry and Ophthalmology on Twitter: "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](https://pbs.twimg.com/media/FU8ZnFmaMAA98Za.png)
Journal of Optometry and Ophthalmology on Twitter: "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
Oluwatobi Oyeniyi, MS, MPH on Twitter: "Please, I'd like to ask, for the reverse RAPD, the left eye is labeled left pupil damaged, does that mean it's a “fixed pupil” that has
![Eye Curriculum on Twitter: "RAPD (relative afferent pupillary defect) can be tested using the swinging flashlight test. When light shines on the unaffected eye, both pupils constrict. When light is quickly swung Eye Curriculum on Twitter: "RAPD (relative afferent pupillary defect) can be tested using the swinging flashlight test. When light shines on the unaffected eye, both pupils constrict. When light is quickly swung](https://pbs.twimg.com/media/FUxPOrmWUAIowbY.jpg)