![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)
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
![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
![Detecting a relative afferent pupillary defect using the swinging light test | International Journal of Ophthalmic Practice Detecting a relative afferent pupillary defect using the swinging light test | International Journal of Ophthalmic Practice](https://www.magonlinelibrary.com/cms/10.12968/ijop.2015.6.1.8/asset/images/medium/ijop.2015.6.1.8_f02.jpg)
Detecting a relative afferent pupillary defect using the swinging light test | International Journal of Ophthalmic Practice
![CMAJ on Twitter: "Swinging light test to detect a relative afferent pupillary defect in advanced #glaucoma http://t.co/nuDOyKuD5s http://t.co/msOdVWMye6" / Twitter CMAJ on Twitter: "Swinging light test to detect a relative afferent pupillary defect in advanced #glaucoma http://t.co/nuDOyKuD5s http://t.co/msOdVWMye6" / Twitter](https://pbs.twimg.com/media/B6rXiHOCIAARQYM.jpg)
CMAJ on Twitter: "Swinging light test to detect a relative afferent pupillary defect in advanced #glaucoma http://t.co/nuDOyKuD5s http://t.co/msOdVWMye6" / Twitter
![Detecting a relative afferent pupillary defect using the swinging light test | International Journal of Ophthalmic Practice Detecting a relative afferent pupillary defect using the swinging light test | International Journal of Ophthalmic Practice](https://www.magonlinelibrary.com/cms/10.12968/ijop.2015.6.1.8/asset/images/medium/ijop.2015.6.1.8_f03.jpg)