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a 26 gauge needle bent twice used for incising the anterior capsule of the lens in lens extraction Wire vectis: a loop of wire attached to a stack used to extract cataract affected lenses Irrigating vectis: a small hollow instrument with a used to introduce fluid into the anterior chamber to raise its pressure to aid cataract extraction [2] Canula
Two main classes of cataract surgical procedures are currently in common use throughout the world: phacoemulsification, and extracapsular cataract extraction. Intracapsular cataract extraction has been superseded where the facilities for surgery under a microscope are available except for cases where the lens capsule cannot be retained, and ...
The cataract is removed from the capsule and anterior chamber using hydroexpression [Note 3] viscoexpression, [Note 4] or more-direct mechanical methods. [4] [13] [14] The extraction of the cataract must be done with due care so as not to compromise the integrity of the tunnel; the endothelium and capsule are also vulnerable to injury.
Intracapsular cryoextraction was the favoured form of cataract extraction from the late 1960s to the early 1980s: it consisted in using a liquid-nitrogen-cooled probe tip to freeze the encapsulated lens to the probe. This required a large incision and the cornea to be folded back and the anterior chamber to be drained.
Cataract surgery, using a temporal approach phacoemulsification probe (in right hand) and "chopper" (in left hand) being done under operating microscope at a Navy medical center A cataract is an opacification or cloudiness of the eye's crystalline lens due to aging, disease, or trauma that typically prevents light from forming a clear image on ...
In intra-capsular cataract extraction (ICCE), the whole lens including the anterior part of the capsule is removed. During more common extra capsular cataract surgery procedures like micro incision cataract surgery, phacoemulsification etc., the clouded lens is removed through an opening made in the anterior lens capsule. [ 23 ]
Refractive surgery is an optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses.This can include various methods of surgical remodeling of the cornea (keratomileusis), lens implantation or lens replacement.
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