Vision databases can be displayed from the press of a button on the screen. Data can be automatically sorted either by the date and time of photography or by patient name or donor cornea number. Changes can be made as desired. It allows images, analytical results, and eyebank or clinical information to be stored in an easy-to-access database.

Vertebroplasty is an image-guided treatment for the alleviation of back pain from vertebral compression fracture. It can provide pain relief and prevent further collapse of fractures that do not heal naturally. It stabilizes the fracture and helps to prevent further collapse of the vertebral body.

Vitamin B6 is a water-soluble vitamin that exists in three major chemical forms: pyridoxine, pyridoxal, and pyridoxamine. It performs a wide variety of functions in human body and is essential for good health. It is essential for more than 100 enzymes involved in protein metabolism. It is also needed for red blood cell metabolism.

A ventricular assist device is a type of device that is designed to take over function for either or both of the heart's ventricles. The ventricles are responsible for pumping blood through the lungs and out to the body. Most often, this device is used in patients who are awaiting a heart transplant, thus it is called as bridge to transplantation. It may be short-term, intermediate-term or long-term, depending on the needs of the each patient.

Vessel harvesting tools consist of first and second vessel engaging members configured and adapted to engage the vessel. The first engaging member and the second engaging member are axially and rotatably adjustable with respect to one another. The main use of these tools is to place the elongate body structure between the first and the second vessel engaging members and axially manipulating the first engaging member with respect to the second engaging member to separate the elongate body structure from surrounding tissue.

Visual acuity systems have Dr. Hermann Snellen's original chart on the exam room wall. These systems have remote controls and bright displays. This allows the clinician to be at the patient's side to fine tune the refraction, while keeping the room lighting dim yet comfortable.

Vagus nerve stimulation system is used to control epileptic seizures. It uses a surgically implanted medical device that delivers electrical pulsed signals to the vagus nerve in the left side of the neck. It is effective in significantly reducing the number and/or intensity of seizures in many people suffering from epilepsy and has the potential for use in the treatment of other inadequately treated, chronic disorders.