Cataract extraction Health Dictionary

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Cataract Extraction: From 1 Different Sources

surgical removal of a cataract from the eye. In extracapsular cataract extraction the cataract alone is removed, leaving the lens capsule behind. Intracapsular cataract extraction is the removal of the whole lens, including the capsule that surrounds it.
Health Source: Oxford | Concise Colour Medical Dictionary
Author: Jonathan Law, Elizabeth Martin

Cataract

Opacity in the crystalline lens of the eye which may be partial or complete... cataract

Cataract Surgery

Removal of the lens from the eye, performed to restore sight in people whose vision is impaired by a cataract. The lens is usually replaced with a plastic implant during the operation, although for young people and those with other eye disorders, a contact or spectacle lens fitted after the operation may be preferable.... cataract surgery

Extraction, Dental

Removal of teeth by a dentist. Extraction may be performed when a tooth is severely decayed or too badly broken to be repaired, or when an abscess (see abscess, dental) has formed. Teeth may also be removed if there is crowding or malocclusion, if the teeth are loose due to gum disease, or if they are preventing another tooth from erupting (see eruption of teeth).

For most extractions, local anaesthesia is used (see anaesthesia, dental). Teeth are usually extracted with dental forceps, which grasp the root of the tooth. In difficult extractions, some gum and bone may also need to be removed from around the tooth.... extraction, dental

Vacuum Extraction

An obstetric procedure to facilitate the delivery of a baby. It may be used if the second stage of labour (see childbirth) is prolonged, if the mother becomes exhausted, or if the baby shows signs of fetal distress. Vacuum suction techniques are also used to perform early abortions.

The vacuum extraction instrument consists of a suction cup connected to a vacuum bottle. The suction cup is placed on the baby’s head in the birth canal, and the vacuum machine sucks the baby’s scalp into the cup. The obstetrician draws the baby out of the mother’s vagina by gently pulling on the cup with each uterine contraction.

The baby is born with a swelling on the scalp, but this disappears after a few days, usually without treatment.... vacuum extraction

Extraction

n. 1. the surgical removal of a part of the body. Extraction of teeth is usually achieved by applying *elevators and extraction *forceps to the crown or root of the tooth to dislocate it from its socket. When this is not possible, for example because the tooth or root is deeply buried within the bone, extraction is performed surgically by removing bone and, where necessary, dividing the tooth. 2. the act of pulling out a baby from the body of its mother during childbirth.... extraction

Tooth Extraction

see extraction.... tooth extraction

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