In a new one-minute video released by the American Academy of Ophthalmology (AAO), American Board of Ophthalmology Chief Executive Officer George B. Bartley, MD, discusses "white things" surgeons may encounter during eyelid surgery. During the video, he explains that it is easy to distinguish the orbital septum from the levator aponeurosis because the septum will have bounce at the arcus marginalis when held, while the levator aponeurosis will not have tension at the rim. Dr. Bartley's method for differentiating between the orbital septum and levator aponeurosis does not require patients to look upwards. Click here to watch the video.