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Vitreous humor
Vitreous humor The clear gelatinous substance that fills the eyeball between the retina and the lens.
RELATED TERMS--------------------------------------
Retina
A membrane lining the inside of the back of the eye that contains light-sensitive nerve cells that convert focused light into nerve impulses, making vision possible.
Lens
The lens of the eye is like an adjustable lens of a camera and focuses light rays on to the retina for sharp images. A condition called presbyopia occurs when the lens is no longer able to adjust for objects at different distances.
SIMILAR TERMS--------------------------------------
Vitrase
Vitrase is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): hyaluronidase.
Vitrasert
Vitrasert is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): ganciclovir.
Vitravene preservative free
Vitravene preservative free is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): fomivirsen sodium.
Vitrectomy
Removing the gel from the center of the eyeball because it has blood and scar tissue in it that blocks sight. An eye surgeon replaces the clouded gel with a clear fluid.
Vitreomacular traction syndrome
A traction-induced visual deficit in which partial posterior vitreous detachment is present in combination with persistent macular adherence.
Vitreous
The transparent, solid, gelatinous material which fills the interior of the eye behind the lens. It allows the eye to maintain its shape.
PREVIOUS AND NEXT TERMS--------------------------------------
Ventricular tachycardia
A condition in which the ventricles cause a very fast heartbeat.
Vertigo
Dizziness.
Vestibular
Pertaining to or toward a vestibule. In dental anatomy, used to refer to the tooth surface directed toward the vestibule of the mouth.
Villi
The tiny, fingerlike projections on the surface of the small intestine that help absorb nutrients.
Viral hepatitis
Hepatitis caused by a virus. Five different viruses (A, B, C, D, and E) most commonly cause this form of hepatitis. Other rare viruses may also cause hepatitis. See hepatitis.
Vitreous humor
Volvulus
A twisting of the stomach or large intestine. May be caused by the stomach being in the wrong position, a foreign substance, or abnormal joining of one part of the stomach or intestine to another. Volvulus can lead to blockage, perforation, peritonitis, and poor blood flow.
Vomiting
The release of stomach contents through the mouth.
Vulva
External, visible part of the female genital area.
Vaccine
A preparation, often of living weakened microorganisms, that is introduced into the body to produce immunity to a specific disease by causing the formation of antibodies.
Vaginal birth
The birth of a baby through the vaginal canal, as opposed to cesarean birth through a surgical incision in the abdomen.
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