1. Hypercoagulable states  (Trust Mark: Doctor-Reviewed)
Hypercoagulable states are conditions that may lead to the abnormal development of blood clots. Blood clots can develop in either arteries or veins. See also: Blood clots in the legs; Deep venous thrombosis (DVT; Hepatic vein obstruction (Budd-Chi...• Reviewer: Sean O. Stitham, MD, private practice in Internal Medicine, Seattle, Washington; and James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Visual field  (Trust Mark: Doctor-Reviewed)
The visual field refers to the total area in which objects can be seen in the side (peripheral) vision while you focus your eyes on a central point.• Reviewer: Paul B. Griggs, MD, Department of Ophthalmology, Virginia Mason Medical Center, Seattle, WA . Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.